verterbrates and invertebrates
A vertebrate has to have a backbone, or a spine. A reptile, bird, squirrel are all vertebrates. Mammals, humans, fishes, amphibians, bird, groundhog, whale and reptiles are vertebrates. If they don’t have a backbone they are not vertebrates.
Animals without a spine is a invertebrates. Here is invertebrates.
earthworm, fly,whelk, crab spider and more!
Humans are mammals because they have hair. Quiz
why are humans mammals? Find in text