A habitat provides animals with food, shelter, and a safe place to raise young. The document discusses the specific habitat needs of different animals such as frogs, polar bears, birds, lions, dogs, pandas, and foxes. For example, frogs need water and camouflage to hide from predators, so they are suited to living near ponds or lakes. Polar bears need sea ice to hunt on and live on, so they are suited to the Arctic. The document concludes that while humans can adapt many environments to live in, some animals cannot do this and have become extinct when their habitats have changed too much.