The checker matches the food you enter against a small, conservative list of common household foods and treats. It then shows a broad status for the animal selected: usually safe, use caution, avoid, call a vet, or unknown. The aim is to help with quick triage and everyday feeding decisions, especially for common searches such as whether dogs, cats, rabbits, ducks or chickens can eat a particular food.
Food safety depends on the species, amount eaten, preparation, size of the animal and health history. Plain blueberries are very different from blueberry muffins. Cooked plain rice is different from rice cooked with onion, oil or sauce. When the checker says unknown, avoid guessing from another species and contact a vet if the food has already been eaten.