Completar frases Animal World ReviewVersión en línea Read the paragraph about the animal world. Choose the correct answer to fill in the blanks. por Carmile Gilbert 1 six lungs fur fish four birds warm Species invertebrates milk blooded vertebrates Animals with backbones are called . Mammals are - animals . Animals with no backbones are called . mean different kinds of animals . Mammals make for their babies . Mammals have limbs . The five types of vertebrates are mammals , , amphibians , reptiles , and . God created animals on day . Mammals breathe with their . Many mammals have and hair .