A "animal that croaks" can refer to various creatures that produce distinct croaking sounds. Synonyms for this term include "frog," "toad," and "tree frog." These animals are mostly found in moist and damp habitats such as swamps, ponds, and marshes. Their croaking sounds are produced through vocal sacks situated on their throats, primarily used for communication and mating purposes. Frogs have smooth and moist skin, a pointed snout, and long legs that make them great jumpers, while toads are characterized by bumpy, dry skin, shorter legs, and wider bodies. Overall, these "animals that croak" play an essential role in the ecosystem and bring a unique charm to the environment.