Bulldog Bat, Barro Colorado Island, Panama, 2007 Photograph by Christian Ziegler

Equipped with echolocation and gaffing claws, the greater bulldog bat of Panama's Barro Colorado Island can detect the hair-thin fin of a fish breaking the water's surface, a useful skill in a forest full of bat competitors.

(Photo shot on assignment for, but not published in, "Winged Victors: Panama's Adaptable Bats," June 2007, National Geographic magazine)

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