Fun facts about the Frog
Frogs drink and breathe through their skin, which must stay moist at all times. The glass frog has a transparent belly through which you can watch its beating heart. Poison dart frogs get their toxicity from their diet of mites and ants — captive-raised frogs on different diets are not poisonous. The wood frog survives winter by freezing solid: its heart stops, its blood stops flowing, and it thaws out in spring.