Answer:
Mammals. The official mammal class is Mammalia. ...
Reptiles. Lizards, dinosaurs, crocodiles, turtles, and snakes – all belong to that ancient and stout class of animals known as the reptiles. ...
Fish. Fish are aquatic vertebrates. ...
Birds. ...
Amphibians. ...
Invertebrates. ...
Insects.
Step-by-step explanation: