If linked, information about the toxin is provided with instructions for emergency care.

Alcoholic beverages	Can cause intoxication, coma, and death.
Baby food	Can contain onion powder, which can be toxic to dogs. (Please see onion below.) Can also result in nutritional deficiencies, if fed in large amounts.
Bones from fish, poultry, or other meat sources	Can cause obstruction or laceration of the digestive system.
Cat food	Generally too high in protein and fats.
Chocolate (interactive chocolate toxicity chart)	Contains theobromine, or theophylline which can be toxic and affect the heart and nervous system. Be aware of cocoa mulch in gardens -it has been linked to many pet deaths!!!!
Coffee, tea, and other caffeinated beverages	Contain caffeine, which can be toxic and affect the heart and nervous systems.
Citrus oil extracts	Can cause vomiting.
Fat trimmings	Can cause pancreatitis. Malamutes need a good amount of fat compared to other breeds, but too much in a sensitive dog  can cause this painful condition.
Grapes and raisins	Contain an unknown toxin, which can damage the kidneys. There have been no problems associated with grape seed extract.
Hops (an ingredient in Beer)	Unknown compound causes panting, increased heart rate, elevated temperature, seizures, and death.
Human vitamin supplements containing iron	Can damage the lining of the digestive system and be toxic to the other organs including the liver and kidneys.
Lettuce	Irritating to the stomach, may cause vomiting.
Large amounts of liver	Can cause Vitamin A toxicity, which affects muscles and bones.
Macadamia nuts	Contain an unknown toxin, which can affect the digestive and nervous systems and muscle.
Marijuana	Can depress the nervous system, cause vomiting, and changes in the heart rate.
Milk and other dairy products	Some adult dogs and cats do not have sufficient amounts of the enzyme lactase, which breaks down the lactose in milk. This can result in diarrhea. Lactose-free milk products are available for pets. "Frosty Paws" or frozen yogurt is a good alternative to ice cream.
Moldy or spoiled food, garbage	Can contain multiple toxins causing vomiting and diarrhea and can also affect other organs.
Mushrooms	Can contain toxins, which may affect multiple systems in the body, cause shock, and result in death.
Onions and garlic (raw, cooked, or powder)	Contain sulfoxides and disulfides, which can damage red blood cells and cause anemia. Cats are more susceptible than dogs. Garlic is less toxic than onions.
Persimmons	Seeds can cause intestinal obstruction and enteritis.
Pits from peaches and plums	Can cause obstruction of the digestive tract.
Potato, rhubarb, and tomato leaves; potato and tomato stems	Contain oxalates, which can affect the digestive, nervous, and urinary systems. This is more of a problem in livestock.
Raw eggs	Contain an enzyme called avidin, which decreases the absorption of biotin (a B vitamin). This can lead to skin and hair coat problems. Raw eggs may also contain Salmonella.
Raw fish	Can result in a thiamine (a B vitamin) deficiency leading to loss of appetite, seizures, and in severe cases, death. More common if raw fish is fed regularly.
Salt	If eaten in large quantities it may lead to electrolyte imbalances.
String	Can become trapped in the digestive system; called a "string foreign body."
Sugary foods	Can lead to obesity, dental problems, and possibly diabetes mellitus.
Table scraps (in large amounts)	Table scraps are not nutritionally balanced. They should never be more than 10% of the diet. Fat should be trimmed from meat; bones should not be fed.
Tobacco	Contains nicotine, which affects the digestive and nervous systems. Can result in rapid heart beat, collapse, coma, and death.
Yeast dough	Can expand and produce gas in the digestive system, causing pain and possible rupture of the stomach or intestines.
Xylitol (such as in Sugarless Gum and candy)	Xylitol triggers significant insulin release in dogs, which drops the blood sugar and can cause death.  Liver damage is also a possibility.

Some of the biggest dangers to pets are prescription medicines.  

In 2007, the ASPCA Animal Poison Control Center received 89,000 calls related to pets ingesting over-the-counter and prescription medications. These are the top 10 medications that poison pets:

If you suspect your pet has ingested any of the following items, please call your veterinarian or the ASPCA Animal Poison Control Center’s 24-hour hotline at (888) 426-4435. And remember to keep all medications tucked away in bathroom cabinets safely away from curious cats and dogs.

1. NSAIDs NSAIDs (non-steroidal anti-inflammatory drugs) like ibuprofen or naproxen are the most common cause of pet poisoning in small animals, and can cause serious problems even in minimal doses. Pets are extremely sensitive to their effects, and may experience stomach and intestinal ulcers and—in the case of cats—kidney damage.
2. Antidepressants Antidepressants can cause vomiting and lethargy and certain types can lead to serotonin syndrome—a condition marked by agitation, elevated body temperature, heart rate and blood pressure, disorientation, vocalization, tremors and seizures.
3. Acetaminophen Cats are especially sensitive to acetaminophen, which can damage red blood cells and interfere with their ability to transport oxygen. In dogs, it can cause liver damage and, at higher doses, red blood cell damage.
4. Methylphenidate (for ADHD) Medications used to treat ADHD (Attention Deficit Hyperactivity Disorder) in people act as stimulants in pets and can dangerously elevate heart rates, blood pressure and body temperature, as well as cause seizures.
5. Fluorouracil Fluorouracil—an anti-cancer drug—is used topically to treat minor skin cancers and solar keratitis in humans. It has proven to be rapidly fatal to dogs, causing severe vomiting, seizures and cardiac arrest even in those who’ve chewed on discarded cotton swabs used to apply the medication.
6. Isoniazid Often the first line of defense against tuberculosis, isoniazid is particularly toxic for dogs because they don’t metabolize it as well as other species. It can cause a rapid onset of severe seizures that may ultimately result in death.
7. Pseudoephedrine Pseudoephedrine is a popular decongestant in many cold and sinus products, and acts like a stimulant if accidentally ingested by pets. In cats and dogs, it causes elevated heart rates, blood pressure and body temperature as well as seizures.
8. Anti-diabetics Many oral diabetes treatments—including glipizide and glyburide—can cause a major drop in blood sugar levels of affected pets. Clinical signs of ingestion include disorientation, lack of coordination and seizures.
9. Vitamin D derivatives Even small exposures to Vitamin D analogues like calcipotriene and calcitriol can cause life-threatening spikes in blood calcium levels in pets. Clinical signs of exposure—including vomiting, loss of appetite, increased urination and thirst due to kidney failure— often don't occur for more than 24 hours after ingestion.
10. Baclofen Baclofen is a muscle relaxant that can impair the central nervous systems of cats and dogs. Some symptoms of ingestion include significant depression, disorientation, vocalization, seizures and coma, which