ANATOMY

Detailed explanation-1: -All animals have skeletons of one sort or another. Mammals, birds, reptiles, amphibians and fish have bony skeletons. These skeletons come in all shapes and sizes, but they also share common features.

Detailed explanation-2: -All backboned animals (vertebrates), including us, have internal skeletons (see the internal skeleton of the toad). Most animals without backbones (invertebrates) have external skeletons (see chiton, insect, sea biscuit), although some invertebrates have internal skeletons, too, although not made of bone like ours.

Detailed explanation-3: -Answer: No, all animals do not have bones.

Detailed explanation-4: -It’s a simple fact, most animals move. Humans (like you) can move because your body is supported by an internal skeleton-that’s right, you are just a bag of bones! All vertebrate animals(fish, amphibians, reptiles, birds and mammals) have internal skeletons.

Detailed explanation-5: -These structures store crucial minerals, such as calcium; provide support to the body; protect internal organs; and enable movement via skeletal muscles, which attach to the bones via tendons.