But big brains may be too costly to maintain when predation risk is high, forcing animals to use other strategies to survive, suggests a study on frog camouflage published Wednesday (August 17) in ...

Frogs are small and ... That's right: It's that vaguely duck-shaped rock. Ducks don't rely on camouflage a lot, but in this case, this duck family is perfectly attuned to its surroundings.

The frog hardly stood out — its brown back, orange belly and starlike spots acted as camouflage against the dark hues and water droplets on the forest floor. And at only 2 to 2.9 centimeters ...