Explore the anatomy of a frog through detailed dissection. Observe internal organs, circulatory & reproductive systems. An educational look at amphibian biology.

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"It's risky for male frogs out there. They're calling their little hearts out to find a mate, but they just have to take on this extra risk of maybe being used as prey," Gould said.

Side puffs are just one of 20 patterns that male vocal sacs evolved for amplifying the calls of frogs and toads. Dr. Raju Kasambe/Wikimedia Commons (CC BY-SA 4.0) Share this: ...