You know, family pets (and all animals) risk all kinds of poisoning from all kinds of places.
Snakes can poison; some plants can poison; and hundreds of poisonous materials are used
around the home by people every day — things like pesticides, weed killers, lawn sprays,
acids, fertilizers, paints . . . the list is endless. Here's what you can do if your pet is poisoned:


Keep the animal warm and quiet
Try to determine what the poison was, when it was ingested, and the amount swallowed
Immediately call your veterinarian or your nearest poison control center
If you decide to take the pet to your veterinarian, bring the container (or the label) with you.
Most of the time poisoning is accidental. Keep poisonous materials out of reach, know what
your pet is doing at all times, and keep emergency telephone numbers handy.


Key to Poison Toxicity Levels
XXX -Emergency
XX -Highly Dangerous
X -  Dangerous
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Plants

Japanese Yew
Araceae Family
Rhododendron
Nightshade/Solanum


Additional Poisonous Plant Information:

Home and Garden Flowers May Harm Pets

It is difficult to give concise information about plant toxicities as there are hundreds of plants that are
potentially poisonous to animals(1). However, actual reports of animals getting seriously ill from eating
plants are relatively infrequent compared to reports of poisonings from household products or drugs.
The plants discussed below can be found in Minnesota and represent among the most dangerous of
poisonous plants. You may notice the conspicuous lack of "holiday plants" among the list. While many
people seem to think poinsettias, ivy and mistletoe are dangerous plants, and while these plants have
toxic potential, they seldom cause serious clinical signs if eaten.
It is worth noting here that dogs and cats often vomit after chewing on plants; this probably does not
represent "poisoning" or any dangerous exposure. Only severe or persistent vomiting is a danger sign
in small animals. Sporadic vomiting without accompanying signs of illness (for instance, diarrhea,
depression, loss of appetite) is rarely a cause for worry, whether associated with plant ingestion or not.
The best advice, however, is to contact your veterinarian if you have specific concerns.


--------------------------------------------------------------------------------

Japanese Yew - XXX  

XXX - Emergency! XX - Highly Dangerous X - Dangerous

Scientific Name: Taxus cuspidus
Common names: Yew, Spreading English Yew, Canada Yew
Plant with similar toxicity: Zygadenus nuttziii, common name Deathcamas.

The Yew plant is an ornamental yard plant, most often used in landscaping around the foundation of a
house. It is an extremely poisonous plant and the animal needs to eat only one-tenth of one percent of
it's body weight to get a toxic dose. (For example, a 50 pound dog would need only 0.05 pounds or
less than 2 ounces of the plant to get a potentially fatal dose!)

The toxin in the Yew is an alkaloid and works by depressing electrical activity in the heart. Signs may
include sudden death from heart failure. If the animal shows clinical signs of toxicosis other than
sudden death those could include: trembling, incoordination, diarrhea, and collapse.

We rarely recognize clinical cases of JapaneseYew poisoning in animals at the University, although that
may be partly because of the difficulty in proving the presence of the toxin as well as the great toxicity.
In cases where animals are found dead it is very difficult to prove the Yew caused the death unless the
animal is necropsied (a veterinary term for an autopsy) and evidence of ingestion - evidence that the
animal actually ate the plant - is found. There are no specific blood or chemical tests to determine if
Yew toxicity is present. While Yew poisoning does not seem to be very common, the best advice is to
know what ornamental plants are present around your house and other buildings and to make sure the
Yew is not one of them!



--------------------------------------------------------------------------------

Araceae Family - X   

XXX - Emergency! XX - Highly Dangerous X - Dangerous

Scientific name: Many, including: Schefflera actinophylla, Dieffenbachia maculata, Begonia
tuberhybrida, Philodendron
Common names: Starleaf, Tuftroot, tuberous begonia, wax begonia, water plant, yellow calla, peace
lily, etc.

This family of house plants and ornamentals contains oxalates and causes toxicity by the formation of
calcium oxalate crystals in the animals organs and by causing the release of chemicals in the body
which can cause an acute allergic reaction. Signs may include excessive salivation, head shaking,
pawing at the mouth, difficult breathing, vomiting, and diarrhea.

Fortunately, the plant causes pain and irritation on chewing and therefore animals rarely eat it in
sufficient quantities to cause severe damage. Much of the motivation for chewing on such a plant
involves boredom and other psychological factors (recent changes in the household, etc.) so it may be
worth noting if an animal begins suddenly eating house plants they used to ignore and discussing the
subject in a phone call or visit to your veterinarian. If your household plants include any of those in the
Araceae family, be aware of the potential for toxicity and preferably keep the plants away from the pet
or switch to safer house plants.


--------------------------------------------------------------------------------

Rhododendrons
(and other cardiac glycoside containing plants)
- X   

XXX - Emergency! XX - Highly Dangerous X - Dangerous

Scientific name: Many, including: Rhododendron, Nerium oleander, Digitalis purpura.
Common names: Rhododendrons, milkweeds, lily-of-the-Valley, laurel, oleander, azalea, foxglove, etc.

This group of common plants all contain cardiac glycosides. Cardiac glycoside drugs derived from one
of these plants, digitalis (foxglove), have been used for many years in the treatment of heart disease in
people and animals. Due to their actions on the heart, however, ingestion of plants containing
glycosides can be fatal. Signs may include vomiting, diarrhea, collapse, or death from heart failure.
Fortunately, the plant has a bitter and very unpleasant taste! Nonetheless, the American Association of
Poison Control Centers (AAPCC) report covering 425 fatal animal poisonings in 1990 includes 4
resulting from cardiac glycoside-containing plants.


--------------------------------------------------------------------------------

Nightshade/Solanum - X   

XXX - Emergency! XX - Highly Dangerous
X - Dangerous

Scientific name: Many, including: Solanum dulcamara, Solanum nigrum, Physalis.
Common names: Nightshades, Chinese lantern, Christmas cherry, Ornamental pepper


These primarily ornamental plants contain toxins called solanines that affect either the stomach or the
brain, depending on the type of poison contained in the plant. It should be noted that some plants
contain no poison whatsoever and it is impossible to be certain whether a given plant contains the
poisonous substances. Clinical signs of toxicity for the plants containing the stomach poison include
severe gastrointestinal upset, such as vomiting, diarrhea (possibly bloody), abdominal pain. If the toxin
affecting the brain is present in the plant eaten, signs may include drowsiness, salivation, difficult
breathing, trembling, weakness and collapse. The AAPCC report indicated 2 of 425 fatal poisonings
occurred as a result of poisoning by solanines.


--------------------------------------------------------------------------------

Drugs

Acetaminophen
NSAIDs

Animal poisoning by drugs is by far the most common type of small animal poison exposure, accounting
for 75% of 1990 toxin exposures as reported by the AAPCC and 82 of 425 fatalities. Dogs and, less
frequently, cats, can be poisoned by human or veterinary drugs as a result of accidental ingestion or
overdose just like children can; it is worth emphasizing that all medications should be placed out of
reach of inquisitive noses which are too often attached to undiscriminating mouths!
This section focuses on those medications which are too frequently given by well-intentioned owners
for the purpose of relieving discomfort experienced by the animal and which instead can cause a much
more serious problem for the pet. Human over-the-counter pain relievers are occasionally used in
veterinary medicine for pain relief but they should only be given upon specific advice and direction of a
veterinarian. Pain relievers, or analgesics, are not designed for use by cats and dogs and a minimal
human dose can poison a pet. Cats and dogs do not utilize and tolerate drugs in the same way people
do and human drugs should NEVER be assumed to be safe for animals.


--------------------------------------------------------------------------------

Acetaminophen (Tylenol) -XXX   

XXX - Emergency! XX - Highly Dangerous X - Dangerous

Tylenol is, of course, a human over-the-counter analgesic medicine used to relieve pain. In people,
after the pills are taken, the ingredients are broken down in the body by enzymes in the liver. In people,
Tylenol is generally a safe and useful painkiller. Cats, however, have less of the enzyme required to
detoxify the drug following ingestion. As a result, there are many dangerous metabolites, or break-
down products of acetaminophen that bind to red blood cells and other tissue cells, resulting in the
destruction of these cells. There may also be direct damage to tissue cells from the painkiller. As little
as one regular strength tablet (325 mg) can poison a cat to the degree that it can develop noticeable
clinical signs of illness. Two extra-strength tablets are likely to kill a cat. Dogs (particularly small dogs)
are also susceptible to significant tissue damage from as little as two regular strength Tylenol and
repeated doses increase the risk significantly. Signs develop quickly and can include salivation,
vomiting, weakness and abdominal pain.

Due to the significant toxicity to pets in relatively minimal dosages, the recommendation is clear -
Tylenol should not be given to dogs or cats. Other, safer, drugs are available for pain relief; talk to
your veterinarian about your own pet's specific needs.


--------------------------------------------------------------------------------
NSAIDs: Aspirin, Ibuprofen, Phenylbutazone, Naproxen - X  


XXX - Emergency! XX - Highly Dangerous X - Dangerous

The pain relievers discussed here are known as NSAIDs (non-steroidal anti-inflammatory drugs) and
are widely prescribed with caution by veterinarians to relieve pain from arthritis and other conditions.
Animal dosages, however, are much lower than human dosages. Use of NSAIDs can significantly
increase the risk for development of stomach or intestinal ulcers, particularly in a sick patient, or one
receiving other medications. These pain relievers cause signs of poisoning by decreasing the mucous
production in the stomach. Mucous serves to protect the stomach from the acids it secretes and
reduction in mucous production decreases the protection the stomach has from acid secretion and
increases the likelihood of ulcer formation. In addition these drugs indirectly decrease the blood flow to
vital organs, particularly the kidney, and can result in significant kidney damage. Two regular strength
aspirin in a small dog can cause clinical signs of poisoning. As with Tylenol, cats are more sensitive to
these drugs and should never be given these medications unless under the specific direction of a
veterinarian.

Again, these drugs can be safely used and, in fact, are employed in veterinary practice every day in
appropriate doses and after careful medical evaluation of the patient. The important point is to
recognize that dogs and cats do not respond in the same way to human medications that people do.
Any medications need to be discussed with and prescribed by a veterinarian prior to giving them to
your pet to avoid an inadvertent and tragic poisoning.


--------------------------------------------------------------------------------

Household Products  

Insecticides
Antifreeze
Cleaning Products
Flea Products
Heavy Metals
Rodenticides
Fertilizers


The category of "household products" probably contains most of the non-drug substances that poison
animals throughout the country each year. This would include insecticides designed to kill ants, fleas,
termites, wasps, etc., pesticides against rats, mice, gophers and other unwanted pests, herbicides to
kill weeds in our yards and gardens, cleaners for our homes and businesses, and ethylene glycol and
fuel and other petroleum products used in cars, heaters, and even lighters. These are products which
are both widespread in use and frequently highly toxic. The combination of being common and deadly
frequently results in a very dangerous situation for household pets who share our homes, cabins,
yards and cars.
For ease of reading and organizational purposes, I have split this category into five narrower
groupings. Remember, however, it is the toxic active ingredient in the substance the pet is exposed to
which will determine how much danger is present. Therefore, it is critical in any case of potential
poisoning to find the container of the toxic substance and know the ingredients when seeking advice or
veterinary services. All rat poisons are not alike and the same is true of ant poisons, herbicides, flea
products, etc. Different poisons may require very different treatments and it is necessary to know the
active ingredient in a potential poison to know how to treat an exposed animal and to give a reasonably
accurate prognosis. Ideally, the veterinarian should have the intact container with the label when
evaluating the toxic potential of the product.


--------------------------------------------------------------------------------

Insecticides, e.g. Ant Poisons - XX  

XXX - Emergency! XX - Highly Dangerous X - Dangerous

There are dozens of insecticides available in hardware and home repair stores designed to kill ants,
termites, wasps, garden pests and many other nuisance insects. Unfortunately, these products present
a risk to our household pets when a dog or cat is accidentally exposed to the poison, usually by eating
the bait or poison. Although there are a host of different active ingredients found in these preparations,
many of them can be grouped into two categories: Organophosphates and carbamates.

Both organophosphates (known as OP's) and carbamates have similar toxic effects which involve
disruption of the normal nervous system function by causing an excess of the neurotransmitter,
acetylcholine, to accumulate in the body. Although acetylcholine is a necessary body chemical for
normal nervous and muscular function, this excess or overdose, causes severe clinical signs that can
result in the death of the animal. If an animal is exposed by eating a poison containing OP's or
carbamates (or, less frequently, absorbing the substance through the skin in a dip product) it can
experience a number of clinical signs. These include excess saliva production, lacrimation or tearing of
the eyes, excessive urination, diarrhea, muscle twitching, weakness, difficult breathing and collapse. It
is critical than an animal potentially exposed to these insecticides be evaluated by veterinary personnel
as quickly as possible in order to provide treatment if necessary before signs become severe, at which
point treatment is often ineffective.

There are many other types of insecticides besides OP's and carbamates, including: Chlorinated
hydrocarbon compounds, pyrethrins, arsenic and others which have different poisonous properties
and which may require different treatments for accidental exposure. As mentioned earlier, in the case
of an accident, it is important to get the container with the label including the insecticide's active
ingredient(s) and bring that information to the attention of the veterinary staff. They can then
determine the type of toxicity and any possible treatments as quickly as possible, preferably before the
pet is very sick. Many of these products are extremely toxic and any delay in evaluation of the cat or
dog can be life-threatening.


--------------------------------------------------------------------------------

Antifreeze - XXX   

XXX - Emergency! XX - Highly Dangerous X - Dangerous

Poisoning by antifreeze, or ethylene glycol, is one of the most common small animal toxicities,
particularly up here in the cold north. Every year do-it-yourself motorists get out the gear needed to
winterize their vehicles, including antifreeze. Unfortunately, this poison has a sweet taste and spilled or
leaked antifreeze is lapped up by many dogs and cats in quantities sufficient to cause severe sickness
and even death.

It takes only about 1/2 teaspoon per pound for a dog to get a toxic dose of ethylene glycol, the active
ingredient in antifreeze, and less for a cat. Although the poison affects both the animal's neurological
and kidney function, the most severe damage usually involves the kidneys. Clinical signs in affected
animals include depression, incoordination, vomiting, and seizures. The best way to combat antifreeze
poisoning is by preventing the animal from having the opportunity to drink the poison. Keep all
containers tightly closed when not in use and clean up spills immediately. It should be noted that this
toxin affects people as well as pets and that small children are also at risk for ethylene glycol poisoning.

There is currently a new product on the market (one trade name is "Sierra"tm) which claims to be safer
than other brands of antifreeze. This product contains propylene glycol as its active ingredient. If
ingested, it can still cause the nervous system injury resulting in incoordination and possibly seizures
but does not cause the more frequently fatal kidney damage. It is clear using such a product would
pose less of a health hazard. The best advice remains, however, to always use any potentially toxic
product carefully to prevent accidental poisoning in the first place.


--------------------------------------------------------------------------------

Cleaning Products - XXX   

XXX - Emergency! XX - Highly Dangerous X - Dangerous

Again, this category contains dozens of products used around the home including toilet bowl cleaners,
bleach, detergents, caustics (e.g., Dranotm, Ajaxtm), pine oils and others. Although intended to keep
our lives safe and healthy by maintaining a clean environment, these products are often highly
poisonous to living tissue if a dog or cat eats or becomes otherwise exposed to the chemicals in the
cleaner.

These cleaners can destroy tissue on contact by acid or alkaline burns, by dissolving through tissue
membranes, by absorbing through to the animal's bloodstream and causing generalized illness and a
variety of other mechanisms. Pine oils and electric dishwashing detergents particularly tend to be quite
toxic although the range of chemicals included in cleaning products can cause signs varying widely
from mild local irritation (many detergent soaps) to deep penetrating tissue damage (alkaline products)
to severe systemic disease (pine oils and others). Once again the best remedy is prevention. Keep all
cleaners tightly closed when not in use to prevent accidental spills and ingestion. Also, be sure to keep
pets out of newly cleaned areas to avoid paw injuries from walking in the newly applied cleaning
solution and mouth burns from the animal then grooming itself. Also be aware of the possible dangers
of toilet bowl cleaners from dogs and cats who consider the toilet just another water bowl! In case of
accidental exposure to cleaning products, it is generally recommended to flush the skin (or mouth) with
plain water to wash away remaining chemicals, then call in to your veterinary clinic for further
instructions. In the AAPCC 1990 report, 5.9% (2,217 animals) of all non-drug poison exposures were
inquiries following exposure to cleaning products, with 80 of those animals being moderately to
severely affected.


--------------------------------------------------------------------------------

Flea Products - X  

XXX - Emergency! XX - Highly Dangerous X - Dangerous

Millions of dollars are spent every year on products designed to rid our non-human companions (and
our homes!) of these unwanted pests. Fleas are highly irritating to dogs and cats and can sometimes
result in severe flea bite allergies for those animals who develop a sensitivity to proteins in the flea's
saliva. Most of the products on the market to combat these insects (the most common of which is
Ctenocephalides felis, the cat flea) create few problems when used as directed. Unfortunately, some
dog flea preparations can be toxic to cats and almost all topical flea preparations (dips, sprays, etc.)
can be poisonous if not used in accordance with label instructions. If label instructions are for once
weekly use, and the product is used daily or more often, poisoning can result. If premise sprays,
specifically not for use directly on pets, are used on or near pets, poisoning may result. The message
is clear -- use brand names you are familiar with (ask your vet for recommendations if you're not
familiar with any specific products), and use according to label instructions. STOP use if your animal
shows any abnormal signs (possibly poor appetite, depression, vomiting, diarrhea, excessive
salivation). Excessive drooling may be caused only by the taste of the product, or may truly be of
concern. Contact your veterinary clinic. Consider bathing your pet in warm water with diluted liquid dish
detergent to remove flea products from the hair and skin oils, thereby limiting your pet's exposure.

Every year hundreds of animals are poisoned by these products, some fatally, by accidental misuse
resulting from misreading, or failing to read, the label instructions. Do not use products intended for
dogs on cats as these may contain compounds that are appropriate for dogs but poisonous to cats. Do
not use premise sprays intended for the house and/or yard on or near pets and always carefully read
instructions prior to use. Call your veterinary clinic with any questions or if your animal shows any
clinical signs during or following flea treatment.


--------------------------------------------------------------------------------

Heavy Metals (e.g., Lead, Zinc) - X   

XXX - Emergency! XX - Highly Dangerous X - Dangerous

Lead poisoning is seen occasionally in small animals, notably in birds, frequently as a result of
ingestion of a foreign object containing lead, for instance, a toy, drapery weight, fishing weight, lead
shot or battery. However, it can also be seen with ingestion of lead-containing paint, caulking, motor oil
and other lead sources. Clinical signs for animal suffering lead poisoning usually include a combination
of signs involving the gastrointestinal system (vomiting, constipation diarrhea, painful abdomen) and
the neurological system (depression, blindness, circling, muscle tremors, incoordination). Onset of
signs is usually relatively quick but signs can progress more slowly if the animal is slowly being exposed
to the poison, i.e., repeated ingestion of lead based paint.

Zinc poisoning occurs most frequently when dogs ingest zinc in the form of pennies. The metal
interacts with components of the animal's red blood cells and can cause, weakness, trembling, loss of
appetite. Although not seen frequently, it is interesting to note how such a mundane object can be toxic
when ingested.


--------------------------------------------------------------------------------

Rodenticides - XXX   

XXX - Emergency! XX - Highly Dangerous X - Dangerous

Poisons intended to kill rats, mice, gophers, moles and other mammalian pests are among the most
common and deadly of small animal toxins. Since rodent and other pests and our companion animal
dogs and cats are all mammals, it follows that substances highly poisonous to the pests would be just
as lethal to our pets, and indeed that is the case. In the 1990 AAPCC report, 8% of all non-drug toxin
exposures resulted from rodenticides and of 425 fatalities, 60 (14%) of deaths were subsequent to
these poisons. Commonly, owners have all but forgotten the old rat poison in the garage cabinet until it
gets knocked onto the ground and the dog has eaten it. Or on farms or stables, rat poison is left in
what seems like a safe place to attract only the rats and then the empty chewed container is seen
outside the doghouse. It cannot be too highly stressed that rodenticides are highly toxic and any such
poisons designed to kill small mammals need to be carefully contained in closed metal cabinets or high
on stable shelving. The poisons usually come in flimsy cardboard containers and any dog, puppy or
cat can chew through the container to get at the bait. Unfortunately, every year far too many do just
that.

Rodenticides are classified according to both their basic ingredient compounds and by how they act on
their target. These categories include: Anti-coagulant rodenticides, cholecalciferol, strychnine, zinc
phosphide, bromethalin, compound 1080 and more. The most common rodenticide poisoning seen in
veterinary practice is that of the anti-coagulant rodenticides. These poisons - with ingredient names
like warfarin, fumarin, diphacinone, bromadiolone - act by interfering with the animal's ability to utilize
Vitamin K. One of they key roles of Vitamin K is in the production of coagulation factors in the body
which cause blood to clot when necessary. Although we are not aware of it, normal physiological
processes require blood to clot many times a day in our bodies and that of our pets. Without the
necessary coagulation factors, normal minor bleeding in the body goes unchecked which, without
treatment, becomes major bleeding, with blood loss anemia, hemorrhage and death resulting. With
most anti-coagulant rodenticides, signs are not seen until 3-5 days after the pet has ingested the
poison. Clinical signs include weakness, difficult breathing, pale mucous membranes, and bleeding
from the nose.

Other types of rodenticides have different mechanisms of action with some (i.e., strychnine and
bromethalin) causing neurological signs such as incoordination, seizures and others cardiac failure (i.
e., cholecalciferol). If accidental ingestion of rat poison is suspected, contact your veterinary clinic
immediately, even if your dog or cat is showing no obvious signs of being ill. Be sure, if possible, to
bring the poison container in to the clinic in order to determine the specific toxin and provide the best
treatment. Early recognition is critical as some poisons, particularly the anti-coagulant rodenticides,
can be successfully treated if the poisoning is caught early and treated appropriately.


--------------------------------------------------------------------------------

Fertilizers  

Spring and fall are times for seeding and fertilizing — and accidental animal poisoning. Cats and dogs
often lick their paws, especially after walking outdoors, perhaps over newly fertilized lawns. Confine
your pet for a while after you fertilize.


--------------------------------------------------------------------------------

Miscellaneous  

Garbage/Food Poisoning
Teflon
Chocolate




Garbage/Food Poisoning - X   

XXX - Emergency! XX - Highly Dangerous X - Dangerous
This is primarily a problem of dogs and cats that roam freely around the farm or neighborhood with
easy access to "road kill," garbage cans, etc. However, any animal that eats decaying, rotten
carcasses or other food material (i.e., left-over hamburger) that has been contaminated by bacteria
and bacteria-produced toxins is susceptible to this poisoning. The toxicity of the rotten food lies largely
in toxins produced by bacteria in the food material which are then delivered in the meal to the dog or
cat and cause severe gastrointestinal upset. Clinical signs can include vomiting, diarrhea (which may
be bloody), fever, abdominal pain, and weakness. Severely affected animals can go into shock and
even die as a result of the absorbed bacterial toxins.

For those animals who are not restricted in their activity it is impossible to prevent possible garbage
poisoning (as well as the all too common "hit-by-car" injuries which are a much more common and
deadly risk for free-roaming animals). However, if your animal has "escaped" and you suspect he or
she has gotten into something very unappetizing (frequently the odor of the meal is obvious even
before the pet throws it up!) be aware that this type of poisoning can be quite serious and follow up
with your veterinarian if you see any signs of illness (repeated vomiting, lethargy, depression).


--------------------------------------------------------------------------------

Teflon - X   

XXX - Emergency! XX - Highly Dangerous X - Dangerous

Teflon toxicity occurs most often in pet birds and in the 1990 AAPCC report on small animal poisoning,
resulted in 5 of 425 fatalities. The problem arises when pots or pans containing either Teflontm or
Silverstonetm are left on a hot stove until heated to >280 degrees Celsius (generally when a pan is
forgotten on a hot stove for some time until it is "white hot"). The result is the release of toxic particles
into the air that cause severe damage to the bird's lungs when inhaled. Birds are unable to clear the
toxic particles by exhaling, coughing, etc. and are therefore more susceptible to this type of poisoning.
Although hard to avoid as it results from an accident, it might be a good idea to house pet birds a
distance from the kitchen (especially if you tend to be an absent-minded cook!)


--------------------------------------------------------------------------------

Chocolate (Drug class: Methylxanthine) - X   

XXX - Emergency! XX - Highly Dangerous X - Dangerous

It often surprises pet owners to discover that for animals, chocolate is poisonous in sufficient dosages.
Specifically it is the drugs in chocolate, theobromine and caffeine (of the drug class methylxanthines),
that are toxic to pets. Only a moderate amount needs to be eaten by an animal, typically a dog, in
order to be poisonous (approx. 1/2 oz. of baking chocolate per pound of body weight and less in some
animals). With the poison in this case being so appealing, overdose is not a rare occurrence.
Poisonings of this type typically occur during the holiday seasons of Easter, Christmas and Halloween.
Depending on their appetite and the specific ingredients contained in the recipe, some dogs have
ingested a toxic dose of chocolate by eating an entire pan of brownies or another chocolate dessert,
particularly one containing baking chocolate. Fortunately, the animal frequently vomits soon after which
reduces the amount of poison in the stomach available to act on the body and decreases the toxicity
somewhat. If clinical signs are seen, these can include vomiting, excessive urination, hyperactivity, fast
breathing, weakness and seizures. While rare, death can occur, usually due to the adverse action of
methylxanthines on the heart.

Many people unknowingly feed their dogs chocolate treats (candy bars, cookies, etc.) without obvious
illness resulting; the lack of clinical signs is due only to the relatively low dose of methylxanthines in
small amounts of milk chocolate. It is certainly better for your pet to stick to treats he or she will like just
as much (freeze-dried liver pieces come to mind - yummy!) and avoid chocolate-containing treats
where the dog is concerned. Also be aware that an accidental overdose of cake, bars, etc. containing
chocolate can pose a significant risk to a dog. If this should happen to your pet, make note of the
amount of chocolate used in the recipe, the approximate amount eaten by your pet and give your
veterinarian a call to determine if the dose was sufficient to cause any problems.


--------------------------------------------------------------------------------

Summary

Hopefully you have found this guide interesting and useful. The underlying message in any discussion
of poisons is to avoid poisoning wherever possible by careful packaging, storing and appropriate use
of potentially toxic items. A second important concept is to recognize potential poisoning as soon as
possible, ascertain what it was the animal was exposed to and get help. Whereas poisoning is not the
most common of problems that most pet owners face with their companion animals (thankfully!), if such
a situation should arise it is worth having considered the possibility beforehand. Having some
guidelines on how to proceed can provide the pet the best chance to be treated and recover from the
crisis. Even more importantly, it is worth having considered the risks and eliminated them before those
risks become reality.


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Acknowledgement   



This guide was generously prepared by Julie Dahlke, DVM, a graduate of the University of
Minnesota, College of Veterinary Medicine. She compiled information on poisons which are
commonly accessible to pets and which cause their owners great concern. This is not an
exhaustive guide to companion animal poisons but instead a useful, readable reference
designed for the pet owner. Dr. Dahlke thanks Dr. Mike Murphy, a veterinary toxicologist
and Ms. Lynn Lawrence, both of the University of Minnesota for their assistance in the
development of this guide.
Everyday household items
that are toxic to your dog
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