Contrary to what you might think, the cranium isn’t made out of just one bone. The human skull consists of twenty-two bones – eight cranial bones and fourteen facial skeleton bones. Except for the jaw, all of these bones are fused together by sutures (immovable joints), hence they tend to act as one.
Evel Knievel has the record for “most bones broken in a lifetime” with 433.
Whales have small leg bones, remnants of their land-living ancestors’ legs.
Babies are born with 300 bones, but by adulthood the number is reduced to 206.