| A | B |
|---|
| Warm blooded | Having a body temperature that stays the same in both hot and cold weather |
| Parasite | An organism that lives on or in another organism |
| Mammals | Animals that have hair on their bodies and give birth to live young |
| Host | An animal on or in which parasites live |
| Cold blooded | Having a body temperature that changes with the temperature of the environment |
| Appendage | A body part that sticks out, such as a wing, feeler, arm, or leg |
| Amphibian | An organism that lives part of its life in water and part on land |
| Arthropod | An animal with a shell, jointed appendages, and body divided into segments |
| Gills | Organs that allow fish to get oxygen from water |
| Invertebrates | Animals without backbones |
| Migrate | To move at regular times of year from one region to another for food, mating, or warmer temperatures |
| Vertebrates | Animals with backbones |
