An adult human skeleton has 206 bones.

Babies are born with around 300 bones, and many of them fuse together as they grow.

The smallest bone in the body is the stapes, in the middle ear. It is only about 3 mm long.

The longest and strongest bone in the body is the femur, or thigh bone.

More than half of the bones in your body are in your hands and feet. Each hand has 27 bones and each foot has 26.

Dancing skeletons go back to the “Danse Macabre,” a medieval art theme from the late Middle Ages showing skeletons dancing with living people.

Disney’s animated short “The Skeleton Dance” came out in 1929. It is one of the first Silly Symphonies cartoons.

Mirror balls became famous in the 1970s disco era, but they were already used in dance halls in the early 1900s.

Bones are living tissue. They grow, repair themselves, and make new blood cells in the bone marrow.

Bats, like the ones on this page, are the only mammals that can truly fly.