If cats are true carnivores why do they eat grass at all ?
The word ‘carnivore’ has two meanings. One is simply any animal that feeds only on meat – for example, crocodiles. The other is mammals belonging to the order Carnivora, which are defined by their cheek teeth, called carnassials, which are designed for slicing flesh. Some members of this order, such as most species of the bear family, Ursidae, eat a large amount of plant matter, so they can be described as omnivorous by nature, but are still carnivores in taxonomic terms. Cats, however, are true carnivores in every sense of the word. The cat family, Felidae, belongs to the order Carnivora, and they feed solely on meat. They cannot digest plant material, and because grass is indigestible to them, eating it makes them vomit. They do this on purpose to help them bring up fur they have swallowed whilst grooming themselves. Omnivores are creatures which habitually feed on both meat and plant matter, have teeth adapted for eating both, and can digest both. Humans fit into this category.
