Loris, Alligator and Cow have teeth. Peacock, Ostrich, Tortoise, Owl, Crow and Kiwi do not have teeth. Birds do not have teeth, although they may have ridges on their bills that help them grip food. Turtles and tortoises don't have teeth. Instead, their mouths have a hard, sharpened edge that they use to bite with, kind of like a bird's beak.