A male túngara frog inflates its vocal sac and starts calling to find a mate, but she is not the only one listening. A hungry predator is eavesdropping on the conversation using its keen hearing. The little frog may be in trouble because the predator can also “see” in complete darkness using echolocation.

The animated video below is based on Damond Kyllo's book, research by Dr. Rachel Page's Laboratory (The Page Lab), and STRI's Amphibian Rescue and Conservation Project.