Freezing Frogs

As the temperature drops, some animals move to a warmer climate, but wood frogs seek cover under leaves where they actually freeze and thaw with their surroundings. As the temperature drops below 32 degrees, ice crystals form right beneath the frog's skin. The normally slimy amphibian becomes slushy. In about three hours if the mercury continues to drop, ice enters the frog's arteries and veins. As a result, after twenty four hours, the heart and brain stop working, and its eyes freeze to a ghostly white. Up to 65% of the water in the frog's body becomes ice. The spectacular thing is that the frog isn't actually dead! As the temperature rises, the frog returns to its normal state in several hours.