Fennec foxes live in underground burrows during the day to avoid the desert heat. They often dig their own burrows, with multiple entrances and exits ...

The burrowing owl is the only owl species that lives underground, digging its own burrow or taking over abandoned ones made by other animals ...

The plains viscacha looks a lot like a chinchilla, but it's known for building vast tunnels underground and for producing ...

In most parts of the natural world, eyesight is key. Animals use it to find food, escape danger, and move around. But in some ...

Dinosaurs had to hunt by day, and so many mammals chose to live largely ... some nocturnal animals to rely on sound. The large ears of a nocturnal fennec fox help it hear prey underground while ...

Most animals don’t keep the same schedule we do. While we try to squeeze in eight hours and call it a good night, many ...

And some animals live in shelter underground. These are called Burrows. If animals, including us humans, don't have one or all of these things, they will die.

Farmers and ranchers (with government assistance) eliminated many prairie dogs because their underground complexes ... These solitary animals live alone, and in May and June females give birth ...