Unit A
Chapter Two
Types of Animals
| inherit | to receive traits from parents |
| trait | a body feature that an animal inherits; it can also be some things that an animal does |
| mammal | an animal that has fur or hair and is fed milk from its mother’s body |
| bird | an animal that has feathers, two legs, and wings |
| amphibian | an animal that begins life in the water and moves onto land as an adult |
| gills | a body part found in fish and young amphibians that takes in oxygen from the water |
| fish | an animal that lives its whole life in water and breathes with gills |
| scales | the small, thin, flat plates that help protect the bodies of fish and reptiles |
| reptile | a land animal that has dry skin covered by scales |
| instinct | a behavior an animal knows how to do without being taught |
| hibernate | to enter a deep sleep in which life activities slow down |
| migrate | to travel as a group from one place to live in another |
| camouflage | a natural disguise some animals have to help them blend in with their surroundings |
| mimicry | an animal’s imitation of another animal or of an object in order to avoid predators |
| extinct | describes a species that is gone forever because of all its kind have died |
| species | a name that identifies a specific kind of organism |
| endangered | in danger of becoming extinct |
| threatened | on the way to becoming endangered or extinct |
| fossil | something that has lasted from a living thing that died long ago |