Live oat grass made exclusively for cats. Not only can cats eat the grass, but most of them love it. Keep in mind that cats are carnivores so they aren't well equipped to digest grass and other plant matter, which is actually why cats love it. They tend to eat grass when they're having trouble digesting something, or are having trouble throwing up a hairball. In this way wheat grass is actually very important for your cats digestive health. In smaller amounts however your cat can digest it just fine and is a fantastic source of vitamins, especially ones that indoor cats often don't get enough of.