Pet Poison & Toxin Database

This comprehensive guide covers common substances toxic to pets including dogs, cats, birds, reptiles, and fish. Knowing what's dangerous and how to respond can save your pet's life.

What to Do If Your Pet Ingests a Toxin

1. Stay calm - Panicking can delay critical action and stress your pet
2. Remove your pet from the source - Prevent further ingestion
3. Identify the substance - Gather packaging, note the amount consumed and time of ingestion
4. Call poison control or your vet immediately - Do NOT wait for symptoms
5. Follow professional instructions exactly - Do not induce vomiting unless directed
6. Transport to veterinary care if advised - Bring the substance packaging with you

Signs of Poisoning to Watch For

Symptoms vary depending on the toxin but may include:

• Gastrointestinal: Vomiting, diarrhea, drooling, loss of appetite, bloody stool
• Neurological: Tremors, seizures, disorientation, loss of coordination, lethargy, hyperactivity
• Respiratory: Difficulty breathing, coughing, rapid breathing
• Cardiovascular: Rapid or slow heart rate, pale gums, collapse
• Urinary: Increased or decreased urination, blood in urine
• Other: Dilated pupils, excessive thirst, weakness, jaundice (yellow gums/eyes)

Foods Toxic to Pets

Chocolate

Species affected: Dogs, cats (dogs more commonly affected due to eating habits)

Toxicity level: Moderate to severe (depends on type and amount)

Chocolate contains theobromine and caffeine, both toxic to pets. Dark chocolate and baking chocolate are most dangerous. White chocolate has minimal theobromine but is still unhealthy.

• Baking chocolate: Most toxic (1 oz can affect a 10 lb dog)
• Dark chocolate: Highly toxic
• Milk chocolate: Moderately toxic
• White chocolate: Low toxicity but high fat content

Symptoms: Vomiting, diarrhea, rapid breathing, increased heart rate, seizures, death in severe cases

Grapes and Raisins

Species affected: Dogs (and potentially cats)

Toxicity level: Severe - can cause kidney failure

The exact toxic compound is unknown, and toxicity is unpredictable. Some dogs show severe reactions to small amounts while others tolerate more. Never assume your dog is safe because they've eaten grapes before without issues.

Symptoms: Vomiting, lethargy, loss of appetite, abdominal pain, decreased urination, kidney failure

Xylitol (Birch Sugar)

Species affected: Dogs (extremely toxic), potentially cats and other species

Toxicity level: Severe - life-threatening

Found in sugar-free gum, candy, baked goods, toothpaste, and some peanut butters. Can cause rapid insulin release leading to dangerous hypoglycemia, and liver failure.

Symptoms: Vomiting, weakness, loss of coordination, collapse, seizures, liver failure

Onions and Garlic

Species affected: Dogs, cats (cats more sensitive), birds

Toxicity level: Moderate to severe with repeated exposure

All members of the allium family (onions, garlic, leeks, chives, shallots) can damage red blood cells causing anemia. Garlic is approximately 5 times more toxic than onions by weight. Effects are cumulative.

Symptoms: Weakness, lethargy, pale gums, rapid breathing, red or brown urine, collapse

Macadamia Nuts

Species affected: Dogs

Toxicity level: Moderate (rarely fatal but causes significant illness)

The exact toxin is unknown. Symptoms typically appear within 12 hours and usually resolve within 48 hours with supportive care.

Symptoms: Weakness (especially in hind legs), vomiting, tremors, hyperthermia, inability to walk

Alcohol

Species affected: All pets (dogs, cats, birds, reptiles, fish)

Toxicity level: Moderate to severe

Pets are much more sensitive to alcohol than humans. Beer, wine, liquor, and foods containing alcohol (raw bread dough, rum cake) are all dangerous. Even small amounts can be harmful to small animals.

Symptoms: Vomiting, diarrhea, difficulty breathing, tremors, loss of coordination, coma, death

Caffeine

Species affected: All pets

Toxicity level: Moderate to severe

Found in coffee, tea, energy drinks, soda, and caffeine pills. Similar effects to chocolate toxicity.

Symptoms: Restlessness, rapid breathing, heart palpitations, muscle tremors, seizures

Avocado

Species affected: Birds (highly toxic), rabbits, horses, goats (dogs and cats less affected)

Toxicity level: Severe for birds; mild to moderate for dogs/cats

Contains persin, which is toxic to many animals. The pit also poses a choking hazard. Birds are extremely sensitive and can die from avocado exposure.

Symptoms: In birds: respiratory distress, weakness, death. In dogs/cats: vomiting, diarrhea

Other Toxic Foods

• Raw yeast dough: Can expand in stomach and produce alcohol
• Salt (in excess): Can cause sodium ion poisoning
• Fruit pits and seeds: Contain cyanide compounds (apple seeds, cherry pits, peach pits)
• Nutmeg: Contains myristicin, toxic to dogs
• Raw eggs: Can contain Salmonella; avidin interferes with biotin absorption
• Cooked bones: Can splinter and cause internal damage
• High-fat foods: Can cause pancreatitis

Plants Toxic to Pets

Highly Toxic Plants

Sago Palm

Species affected: Dogs, cats

Toxicity level: Severe - often fatal

All parts are toxic, especially the seeds (nuts). Contains cycasin, which causes severe liver failure. Mortality rate is approximately 50% even with treatment.

Symptoms: Vomiting, diarrhea, seizures, liver failure, death

Oleander

Species affected: All animals (dogs, cats, birds, horses)

Toxicity level: Severe - potentially fatal

All parts are extremely toxic. Contains cardiac glycosides that affect the heart.

Symptoms: Drooling, abdominal pain, diarrhea, abnormal heart rhythm, death

Azaleas and Rhododendrons

Species affected: Dogs, cats, horses

Toxicity level: Moderate to severe

Contain grayanotoxins that affect sodium channels in cells.

Symptoms: Vomiting, diarrhea, drooling, weakness, cardiac abnormalities, coma

Tulips and Hyacinths

Species affected: Dogs, cats

Toxicity level: Moderate (bulbs most toxic)

The bulbs contain the highest concentration of toxins. Commonly ingested by dogs who dig them up.

Symptoms: Drooling, vomiting, diarrhea, increased heart rate, difficulty breathing

Autumn Crocus

Species affected: Dogs, cats

Toxicity level: Severe

Contains colchicine, which can cause multi-organ failure. Not to be confused with spring crocus, which is less toxic.

Symptoms: Bloody vomiting, diarrhea, shock, organ damage, bone marrow suppression

Other Common Toxic Plants

• Dieffenbachia (Dumb Cane): Causes oral irritation, drooling, difficulty swallowing
• Philodendron: Oral irritation, swelling, difficulty breathing
• Pothos: Similar to philodendron; common houseplant
• Peace Lily: Oral irritation (different from true lilies, less dangerous to cats)
• Aloe Vera: Can cause vomiting, diarrhea, lethargy
• Chrysanthemums: Skin irritation, vomiting, diarrhea
• Daffodils: Bulbs most toxic; causes vomiting, diarrhea, cardiac issues
• Foxglove: Contains cardiac glycosides; potentially fatal
• Lily of the Valley: Cardiac glycosides; can cause fatal heart arrhythmias
• Yew: All parts except berry flesh are toxic; can cause sudden death
• English Ivy: Causes vomiting, diarrhea, abdominal pain
• Marijuana: Toxic to dogs and cats; causes neurological symptoms

Household Chemicals

Antifreeze (Ethylene Glycol)

Species affected: All animals

Toxicity level: Severe - often fatal

Symptoms (stages):

1. 30 minutes to 12 hours: Appearing "drunk," vomiting, excessive thirst/urination
2. 12-24 hours: May seem to improve (deceiving)
3. 24-72 hours: Severe kidney failure, seizures, death

Cleaning Products

Severity depends on the specific product and concentration:

• Bleach: Can cause chemical burns, respiratory irritation, vomiting
• Drain cleaners: Highly caustic; severe chemical burns
• Toilet bowl cleaners: Can be corrosive; keep lids closed
• Laundry pods: Concentrated detergent; attractive colors appeal to pets
• Essential oils: Many are toxic, especially to cats (tea tree, peppermint, citrus)
• Fabric softener sheets: Can cause oral ulcers and GI upset

Rodenticides (Rat and Mouse Poisons)

Species affected: All animals

Toxicity level: Severe

There are several types of rodenticides, each requiring different treatment:

• Anticoagulants (brodifacoum, bromadiolone): Prevent blood clotting; may not show symptoms for 3-5 days
• Bromethalin: Affects nervous system; causes brain swelling
• Cholecalciferol (Vitamin D3): Causes kidney failure
• Zinc phosphide: Releases toxic gas in stomach

Important: Bring the product packaging to the vet - treatment varies by type.

Insecticides

• Pyrethrins/pyrethroids: Especially toxic to cats; found in many flea products for dogs
• Organophosphates: Found in some older flea products; highly toxic
• Snail/slug bait (metaldehyde): Causes severe tremors and seizures
• Ant baits: Usually low toxicity but can cause GI upset

Medications Dangerous to Pets

Over-the-Counter Medications

Acetaminophen (Tylenol)

Species affected: Cats (extremely sensitive), dogs

Toxicity level: Severe, especially for cats

Cats lack the enzyme to metabolize acetaminophen. A single regular-strength tablet can be fatal to a cat. Dogs can tolerate higher doses but are still at risk.

Symptoms: Brown/blue gums (methemoglobinemia), facial swelling in cats, liver failure, death

Ibuprofen and Naproxen (Advil, Motrin, Aleve)

Species affected: Dogs, cats

Toxicity level: Moderate to severe

NSAIDs can cause stomach ulcers and kidney failure in pets even at relatively low doses.

Symptoms: Vomiting (possibly with blood), diarrhea, abdominal pain, kidney failure

Aspirin

Species affected: Cats (very sensitive), dogs

Toxicity level: Moderate

While sometimes prescribed by vets at specific doses, aspirin is dangerous when given inappropriately. Cats are particularly sensitive.

Prescription Medications

• Antidepressants (SSRIs, SNRIs): Can cause serotonin syndrome, tremors, seizures
• ADHD medications (amphetamines): Rapid heart rate, tremors, seizures, death
• Blood pressure medications: Can cause dangerous drops in blood pressure
• Sleep aids and benzodiazepines: Severe sedation, respiratory depression
• Birth control pills: Can cause bone marrow suppression with large ingestion
• Thyroid medications: Especially dangerous if pets eat large quantities
• Diabetes medications: Can cause dangerous low blood sugar
• Opioid pain medications: Severe sedation, respiratory failure, death

Species-Specific Considerations

Dogs

Dogs are most commonly affected by poisoning due to their indiscriminate eating habits. They're particularly at risk from chocolate, xylitol, grapes/raisins, and rodenticides.

Cats

Cats are extremely sensitive to many toxins due to their unique metabolism. Lilies, acetaminophen, and pyrethroid insecticides are particularly dangerous. Essential oils are also a significant risk.

Birds

Birds have very sensitive respiratory systems. Dangerous items include: avocado, Teflon fumes (overheated non-stick cookware), scented candles, air fresheners, aerosol sprays, and many houseplants.

Reptiles

Reptiles can be affected by pesticides, toxic plants placed in enclosures, and contaminated feeder insects. Cedar and pine shavings release harmful phenols.

Fish

Fish are extremely sensitive to water quality changes. Toxic substances include: chlorine/chloramine in tap water, copper from medications (lethal to invertebrates), aerosol sprays near tanks, and hand lotions/soaps contaminating tank water.

Prevention Tips

• Store all medications, chemicals, and toxic foods securely out of reach
• Use childproof containers (pets can chew through bottles)
• Research all plants before bringing them into your home
• Read all product labels carefully before use around pets
• Never leave medications on counters or nightstands
• Keep garbage secured with locking lids
• Clean up antifreeze spills immediately
• Use pet-safe rodent and insect control methods when possible
• Keep pets away during and after cleaning with chemicals
• Educate all family members and guests about pet toxins