Lovebirds are unusual not just because of their shameless PDA, but because they choose one mate for life. While more than 90 ...

If you've ever watched any nature documentary you'll likely know that the animal world is full of wild and impressively complex mating rituals. Great Blue Heron mating habits, for example, involve ...

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 ...

A new study of wild bats reveals that an animal's immune system is shaped by more than its need to fight infections. Researchers from the University of Maryland have found that sex, age and ...