Heart is muscle meat. Raw meat can carry bacteria such as Salmonella and E. coli (ASPCA), so cook it plain.
VCA advises that treats, snacks and people foods together stay within 10% of a cat's daily calories, with the rest from a complete and balanced cat food. No source we checked gives an amount for this specific food, so ask your veterinarian about your own cat.
Cook plain, with no seasoning, onion, garlic or added salt (ASPCA).
Raw meat can carry bacteria such as Salmonella and E. coli (ASPCA). Cooked, plain heart is the more cautious choice.
General public resources referenced while researching this tool's topic.
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.