Avocado contains persin, a compound found throughout the plant but concentrated most heavily in the leaves, stem, skin, and pit rather than the flesh. Sensitivity to persin varies enormously by species — birds, rabbits, horses, and ruminants are highly sensitive and can suffer severe illness or death, while cats (like dogs) are considered much less sensitive. Most cats that ingest avocado either remain well or develop mild gastrointestinal upset.
ASPCA says avocado is mainly a problem for birds, rabbits and some farm animals, and does not name cats. No safe amount for cats is established; the pit is a choking and blockage hazard.
No — birds and some other animals are highly sensitive to persin, the toxin in avocado, and can become seriously ill from small amounts, but cats are considered much less sensitive, with most affected cats developing only mild GI upset. The bigger practical risks for cats are the pit (a choking/obstruction hazard) and the fruit's fat content.
A little flesh is usually not an emergency, but call your veterinarian, especially if your cat ate a large amount, the skin, or the pit. The pit is a serious choking and blockage hazard.
No. Guacamole usually contains onion and garlic along with salt, which are toxic or unsuitable for cats.
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General educational guidance based on the references above, not veterinary advice. See our editorial policy for how we choose sources.
This tool is intended for educational purposes only and should not be used as a substitute for emergency veterinary advice, diagnosis, or treatment.
If your pet may have consumed toxic foods, chocolate, medications, chemicals, or other dangerous substances, seek immediate help from a licensed veterinarian or emergency animal service in your area. Do not delay professional care based on calculator or search results alone.
Pet poison hotlines (24/7, US and Canada):
ASPCA Animal Poison Control Center: (888) 426-4435
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Pet Poison Helpline: (855) 764-7661
Pet Poison Helpline states its service covers the U.S., Canada and the Caribbean. The ASPCA line is also used by Canadian pet owners. A consultation fee may apply to both. In Canada, your nearest 24-hour emergency vet clinic is the best first call; elsewhere, use local emergency veterinary directories.
How we calculate results: This tool uses commonly referenced veterinary toxicity thresholds and food safety guidelines. Actual toxicity can vary based on your pet's size, health status, and exact substance consumed. These results are estimates only and do not replace a veterinary assessment.