Woodpecker A bird that nests in tree cavities. Woolly Mammoth The Woolly Mammoth is an extinct elephant from the Ice Ages. The Woolly Rhino is an extinct rhinoceros from the Ice Ages. Working Dogs Working dogs are breeds that have been trained to do various tasks, like pulling sleds or guarding. Worm Worms are little animals with a long, soft body and no legs.
Earthworms are worms that benefit the soil.
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