| A | B |
|---|
| scales | Body feature that helps protect a fish |
| gills | Body features that take in oxygen from water |
| inherit | To receive features from parents |
| birds | Animals that have feathers |
| reptiles | Land animals that have scales |
| amphibians | Animals that usually live in water & later on land |
| fish | Animals that live only in water |
| mammals | Animals that feed their young with milk |
| trait | A body feature that an animal is born with |
| fossil | Evidence that a plant or animal lived long ago |
| extinct | When all of one kind of organism is gone forever |
| threatened | An organism whose numbers are going down |
| species | The scientific name of an organism |
| endangered | A species that may become extinct |
| migrate | To travel from one place to another and back again |
| camouflage | Colors, patterns and shapes that help an animal blend in with its surroundings |
| mimicry | Imitating the features of another animal to keep preditors away |
| instincts | Behaviors an animal knows how to do |
| hibernate | Go into a deep sleep during winter months |
