Summary: A lesson in taxonomy that isn't so taxing! -- If an animal gives milk Like a cow or a camel It's a mammal All the worms in the Earth And all of their kids Are annelids Creatures with external skeletons And segmented bods Are arthropods (like a crab or an insect) Single-celled, microscopic Creatures, you ought to know-a Are protozoa (like amoebas and flagellates) Mammals that live in the water Needn't fear dehydration They're cetaceans (like a whale or a dolphin) They're all part of the animal kingdom
