Laziness in the animal kingdom is often a clever survival strategy. It helps conserve energy in tough environments, with many ...

When the lights go out and the rules fall apart, your pet instantly becomes both a lifeline and a liability. That’s not doom ...

Animal-welfare science tries to get inside the minds of a huge range of species — in order to help improve their lives. Credit...Photo Illustration by Zachary Scott Supported by By Bill Wasik and ...

Sleep in fish may look different from humans, but rest is essential for survival. Here’s what experts have to say about fish sleep. A protective mucous cocoon surrounds this parrotfish as it sleeps in ...