Yes, frogs actually freeze, the heart stops beating and they stay that way throughout the winter.
Then, when spring arrives, they thaw out and return to the normal active life of a frog !
If you haven't seen or read that, HERE'S THE LINK to Frozen Frogs. (When you click on this link, a short video may be at the top of the page. If it is, then, Scroll down a few inches and you will find the article.)
But, guess what.
What?
It is not only frogs that freeze but also Box Turtles.
This short 1 minute explanation will tell how and why.
HERE'S THE LINK to Eastern Box Turtles -- Frozen Alive
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