The environment an animal lives in is called it's habitat. An animal is able to survive in this habitat based on adaptations that help them find and gather food, avoid predators, breathe, mate, and do other things that animals require. Many animals move back and forth between different habitats or spend time in habitats that are a combination of factors. To survive, animals need to be able to adapt to their environment or change it entirely. For example, the giraffe's tall neck allows it to eat from tall trees, while birds who prefer warmer weather will migrate during the winter.