Ключевые слова: animal, aquatic, bank, beam, brown, burrow, collar, cutting, dive, dusk, dwelling, eating, ecology, environment, fauna, fur, furry, gnaw, grunts, herbivore, horizontal, incisor, large, like, lives, lodge, long, loudly, makes, marshes, nibble, nutria, often, ponds, rat, rodent, round, semi, sitting, south, species, streams, swim, tail, tooth, water, zoology,