They have to live through freezing winters, drying summer winds, and the air has less oxygen than it does in the valley far, far below. Frogs living in the mountains protect themselves in different ways. Some use camouflage. They can do this in small bushes. If the frog is green it can blend in with little plants.
Some frogs protect themselves with poisonous fluids that are secreted onto their skin.
They have a bright color which warns predators to stay away. One example of a frog that has adapted to living in the mountains is the Torrent Frog. Because it lives in mountain streams which flow very fast, it has large fingertips which cling to rocks so it won't get carried away.