| A | B |
| adaptation | ability to survive in its environment |
| common ancestor | the shared ancestor of new, different species that arose from one population |
| fossils | remains of ancient life |
| species | animals that look alike |
| diversity | variety or differences |
| dribble | To flow or let in small drops |
| Predator | An animal that lives by hunting other animals for food |
| Poisonous | Harms or kills by chemical action |
| Pounce | To leap or spring suddenly in attack |
| Prey | An animal that is hunted by another animal |
| vibrations | random motions of matter |
| extraordinary | something that is exceptional |
| muzzle | the nose and mouth of an animal |
| lichen | food source for Caribou |
| Camouflaged | To disguise |