Kibble is a dry pellet pet food that is first cooked in a cauldron, then baked, then crushed. It last a very very long time without decay, and the small sized particles means animals will not eat more than they are hungry for.     Different animals will eat different sorts of kibble.   Meat kibble is over 50% fish or meat, it can also contain grains or vegetable filler, and also animal byproducts (bladder, tails, animal fat) as long as t least 50% is meat.