Frozen Wood Frog
The hearts of the Alaskan wood frog actually stop while the frogs are frozen in winter, but they hop away unharmed in the spring.
Key Facts In This Video
Wood frogs live farther North than any other frog. (0:23)
See a frog frozen solid at -3 degrees Celsius: (0:35)
Watch a frog gradually warm and spring to life: (0:47)