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Frogs are amazingly diverse, ranging from the massive Goliath frog, which weighs several pounds, to the discovered gold frog, which measures a mere three-eighths of an inch when fully grown. This title reveals how frogs evolved, what species exist in the world and some that have gone extinct, that toads are just a type of frog, and more.The Animal Answer Guide Michael E. Dorcas, Whit Gibbons ... in some situations revealing the presence of pesticides, herbicides, and heavy metals that could harm humans. In one ... In the medical field, bullfrogs and leopard frogs are used in basic laboratory courses in comparative anatomy and physiology and have beenanbsp;...

Author:Michael E. Dorcas, Whit Gibbons
Publisher:JHU Press - 2011-04-06


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