The document discusses the classification of animals. It separates animals into vertebrates and invertebrates based on whether they have a skeleton or not. It also categorizes animals based on how they are born, either viviparous meaning live birth or oviparous meaning egg birth, and what they eat, being herbivorous, carnivorous, or omnivorous depending on if they eat plants, other animals, or both plants and animals respectively. Examples provided are lions as carnivorous and snakes and crocodiles also being carnivorous.