Chives are members of the Allium genus, and the Merck Veterinary Manual explicitly lists them among the Allium species that cause toxicosis, alongside garlic, onions, and leeks. Like the rest of this family, chives contain sulfur compounds that oxidize red blood cells, producing Heinz bodies and potentially hemolytic anemia. Cats are reported to be the most susceptible species to allium toxicity, more so than dogs.
No chive-specific dose was found, but given that cats develop signs from smaller amounts of onion than dogs do, and chives work through the same mechanism, no amount of chives should be treated as safe for cats.
Contact a veterinarian or pet poison hotline right away, noting roughly how much was eaten. Signs of anemia can be delayed.
Yes. Chives and other alliums are toxic to cats, so keep the plants out of reach and prevent cats from chewing them.
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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.