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scaly


(SKAY-lee)

Covered in small, thin plates. Fish, snakes, and other reptiles have scaly skin.

  scaly

backbone


(BAK-bohn)

A set of bones that run down the middle of the back of humans and some animals.

backbone

skeleton


(SKEL-uh-tuhn)

The framework of bones under a person’s or animal’s skin that supports and protects the body.

  skeleton
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