17. Armadillos
Armadillos are some of the animal kingdom’s most committed sleepers, often logging up to 16 hours of rest each day. They retreat to underground burrows, where the earth provides insulation from both predators and temperature extremes.
These hidden, cozy tunnels offer the perfect sanctuary for deep, uninterrupted sleep. For armadillos, this subterranean lifestyle is not just about comfort—it’s an essential strategy for survival in the wild. Smithsonian