Add Yahoo as a preferred source to see more of our stories on Google. A male hourglass tree frog (Dendropsophus ebraccatus) with an inflated vocal sac used to produce calls. (Ryan Taylor) Your taste ...

Older male whales are more successful at mating than their younger rivals because they are better singers, suggests a new study. Older singing male whales are increasingly successful at siring ...

Plants and animals have evolved all sorts of ways to make themselves more appealing to potential mates—including colorful feet, flamboyant feathers, complex mating dances and sexual deception. Many ...