Shape matters as well as size in the great range of male frog show-off equipment for competitive seductive serenades.

and on it is a clutch of gelatinous red-eyed tree frog eggs. She tears off a strip of tape and sticks the piece of leaf onto a blue plastic rectangle, cut from a plastic picnic plate.

Colors: Bright yellow with black markings. One of the most toxic frogs in the world, its color serves as a warning. Colors: ...

Many scientists believe the red-eyed tree frog developed its vivid scarlet peepers ... webbed orange feet and bright blue-and-yellow flanks. This technique, called startle coloration, may give ...