Cilantro isn't known to be harmful to cats, but individual reactions may vary. While some cats may show interest in small amounts of cilantro, others may not. is cilantro bad for cats Remember, cats are obligate carnivores and need animal-based proteins for proper nutrition. Cilantro is best offered as an occasional treat, but their main diet should consist of specialized cat food. Consult your vet for guidance on incorporating new foods safely.