Frogs can live surprisingly long lives in captivity, between 4 to 15 years. While most frogs have small cone-shaped teeth around their jaws, the largest frog is the Goliath frog which can grow to nearly one foot long with legs at least that long. Some frogs like the Gold Frog are quite small, only growing to 9.8 millimeters as adults. Frogs have various adaptations for surviving in different environments, such as webbed feet for swimming or burrowing underground and hibernating in cold regions.