Frogs and Toads
Most frogs eat mainly plants when they are tadpoles and switch to a diet of mainly insects once they turn into froglets. Some tadpoles also eat little bits of dead animal matter that float down to the bottom of the water, and the tadpoles of a few species will even eat an insect or other invertebrate (in-VER-teh-breht), which is an animal without a backbone. Not all adult frogs will only eat insects. Many of the larger species will gulp down anything they can catch and swallow. Bullfrogs, which are common throughout much of North America, are one type of frog that will almost eat anything that comes within reach, including ducklings and other bullfrogs.