For some animals, reproduction comes at the ultimate cost—their own lives. While this may seem extreme, it's a natural strategy to maximize reproductive success. These species invest everything into ...

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 ...

All animals need sleep. When humans or animals don't get enough, it can lead to trouble paying attention, irritability, and other ill effects. And yet, researchers reporting in the journal Current ...