 They are nocturnal, and primarily insectivorous, though they will eat almost anything they can overpower and swallow, including other frogs.They are shy animals, often fleeing beneath the water if approached.The Plains leopard frog, as its name implies, is found throughout the Great Plains of the United States, from Indiana west across central and southern plains to South Dakota, south to Colorado, New Mexico, and Texas, with a disjunct population in Arizona.