Is a dinosaur an animal?

Animals are classified into vertebrates and invertebrates (vertebrates being animals with a backbone and invertebrates being animals without a backbone) most animals being vertebrates are then divided into five other groups Mammals, Birds, Reptiles, Amphibians and Fish. read more

The word Dinosaur means ‘terrible lizard’, lizards being reptiles brings us to a conclusion that dinosaurs are reptiles. Reptiles are animals which tells us dinosaurs are animals. However some dinosaurs are aquatic and flying dinosaurs pterodactyls lived with dinosaurs, this does not mean they are actually dinosaurs. read more

Many prehistoric animal groups are popularly conceived of as dinosaurs, such as ichthyosaurs, mosasaurs, plesiosaurs, pterosaurs, and pelycosaurs (especially Dimetrodon), but are not classified scientifically as dinosaurs, and none had the erect hind limb posture characteristic of true dinosaurs. read more