Is It Toxic to Cats?
Complete, vet-reviewed guide to foods, plants, household items, and medications that are toxic to cats. Each entry includes symptoms, treatment, costs, and what to do right now.
Emergency? Call ASPCA Poison Control: (888) 426-4435
Available 24/7. If your cats has eaten something toxic, don't wait — call now.
🍎 Foods & Drinks
Chocolate
SevereChocolate is toxic to cats, though cats are less likely to eat it voluntarily due to their inability to taste sweetness. However, if a cat does ingest…
Onions and Garlic
Potentially FatalOnions and garlic are highly toxic to cats — even more so than to dogs. Cats are extremely sensitive to the thiosulfates in Allium plants, and ingesti…
Xylitol (Birch Sugar)
ModerateXylitol appears to be less toxic to cats than to dogs based on current evidence, but it can still cause hypoglycemia and should be treated as a potent…
Essential Oils (Tea Tree, Eucalyptus)
SevereMany essential oils are toxic to cats because cats lack the liver enzyme (glucuronosyltransferase) needed to metabolize terpenes and phenolic compound…
🌿 Plants & Flowers
Lilies (All Species)
Potentially FatalLilies are EXTREMELY toxic to cats — all parts of the plant (petals, leaves, stem, pollen, and even the water in the vase) can cause irreversible kidn…
Pothos (Devil's Ivy)
ModeratePothos contains insoluble calcium oxalate crystals that cause immediate, severe pain and irritation in a cat's mouth, tongue, and throat when chewed. …
Aloe Vera
ModerateAloe vera contains saponins and anthraquinones that are toxic to cats when ingested. While topical aloe gel is sometimes used on cats' skin, chewing o…
Sago Palm
Potentially FatalSago palms are extremely toxic to cats, just as they are to dogs. All parts of the plant contain cycasin, which causes severe liver failure. The seeds…
Tulips and Daffodils
ModerateTulips and daffodils contain toxic alkaloids (tulipalin A and lycorine) concentrated in the bulbs. Chewing on any part of the plant causes intense gas…
Azaleas and Rhododendrons
SevereAzaleas and rhododendrons contain grayanotoxins that are toxic to cats. Ingestion of even a few leaves can cause vomiting, diarrhea, weakness, and in …
🏠 Household Items
Dog Flea Medication (Permethrin)
Potentially FatalPermethrin-based flea and tick products designed for DOGS are EXTREMELY toxic to cats. Even skin contact with a dog that has been treated can poison a…
Antifreeze (Ethylene Glycol)
Potentially FatalAntifreeze is as lethal to cats as it is to dogs — even a few laps of spilled antifreeze can cause fatal kidney failure. Cats are attracted to the swe…
💊 Medications & Drugs
Acetaminophen (Tylenol)
Potentially FatalAcetaminophen (Tylenol) is EXTREMELY toxic to cats — even a single regular-strength tablet (325 mg) can be fatal. Cats are uniquely susceptible becaus…
Ibuprofen (Advil)
Potentially FatalIbuprofen is highly toxic to cats and can cause stomach ulcers, kidney failure, and central nervous system damage. Cats are even more sensitive to ibu…
Marijuana (Cannabis)
ModerateMarijuana is toxic to cats, and cats are more sensitive to THC than dogs or humans. Ingestion of cannabis plant material, edibles, or exposure to seco…
How to Protect Your Cats from Poisoning
- Keep all toxic foods, plants, and medications stored securely out of reach.
- Read ingredient labels carefully — xylitol (birch sugar), onion powder, and garlic powder are hidden in many foods.
- Research every plant before bringing it into your home or garden.
- Never give your cats human medication without veterinary approval.
- Save the ASPCA Poison Control number 4435 in your phone: (888) 426-4435.
- Keep a pet first aid kit at home with 3% hydrogen peroxide (for inducing vomiting when instructed).