Today we’re going to look at vertebrate animals. As you know, we can classify animals in various ways, depending on the characteristics we look at. Today, we’re going to some animals by the internal structure of their bodies. According to this feature, we can classify them into... Vertebrate Animals, which have an internal skeleton, that means bones.... And Invertebrate Animals... like this worm, which has no backbone... in fact, no bones at all. All vertebrate animals have an internal sk