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The Eumetazoa make up almost all animals, except sponges and a few other animals without legs, fins, or tentacles. In this key, only the one with appendages are included. Since it's easy to assume something can't fly (such as a chicken), we're including flying things in this key. Some of these animals have a skeleton on the inside, others don't.

Jumping fish
Spider

a. It has bones and no exoskeleton (Subphylum Vertebrata)

b. It has no bones, and it may or may not have an exoskeleton

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