Inside your body there is a framework of bones. This is your skeleton - without it you wouldn't be able to move and your body would be an unattractive soft heap on the floor. Many other types of animals have skeletons too that are similar to ours.
Not all bones are the same. A bird's bones can be very light and fragile, the bones of a fish can be very flexible. Bones differ according to the different jobs they do. A leg bone that has to support a lot of weight will be big and strong, for example. There are many animals that don't have bones at all. Can you think of some examples?
In this worksheet you can try out your knowledge of bones and skeletons.