Does a wood frog heart stop beating when it freezes?

Yes, the heart of a wood frog can stop beating when it freezes. These frogs have a remarkable ability to survive freezing temperatures by entering a state of suspended animation, where their bodily functions, including the heartbeat, effectively halt. Once the ice thaws, their hearts resume normal function, allowing them to recover and continue their life cycle. This adaptation is crucial for their survival in harsh, cold environments.