Weather Makes Them Sleep

A little wood frog buries itself under a pile of leaves and gets ready for a long, winter's snooze. Why does it need to sleep? Lean all about wood frog hibernation and how weather makes them sleep. Colorful photos and carefully leveled text guide readers along on the seasonal journey from munching on bugs to filling up with antifreeze.

Garter snakes gather together for a long winter's snooze. Why do they need to sleep? Learn all about garter snake hibernation and how weather makes them sleep. Colorful photos and carefully leveled text guide readers along on the seasonal journey from basking in the sun to piling up for some shut-eye.

A black bear settles into its cozy den for a long winter's snooze. Why does it need to sleep? Learn all about black bear hibernation and how weather makes them sleep. Colorful photos and carefully leveled text guide readers along on the seasonal journey from munching on berries to serene slumber.

A groundhog crawls into a special, deep burrow for a long winter's snooze. Why does it need to sleep? Learn all about groundhog hibernation and how weather makes them sleep. Colorful photos and carefully leveled text guide readers along on the seasonal journey from digging in the dirt to crawling deep underground for some much-deserved rest.