During the cold winters, the Alaskan Wood Frog (Rana sylvatica) becomes a frog-shaped block of ice. It stops breathing, and its heart stops beating. When Spring arrives the frog thaws and returns to normal.
I've got a frog in my throat. This burrowing owl was left with a huge pair of frog's legs dangling from its mouth when it tried to eat breakfast in one go. The bird struggled to gulp down its prey as it stood in a grassy field.