Classification of Animals Quiz, 3rd, 4th, 5th grades. In this quiz kids will learn how to classify either as living or non-living, mammals, birds, fish, reptiles, amphibians, bird, vertebrates and invertebrates. This quiz contains pictures of different animals and students have to watch and classify them under the different categories. This quiz will also enable students to learn the names of some animals. Classification of animals is based on similarities in some of their external and internal characteristics-