Diapause could be a stage of suspended development to cope with unfavorable conditions. Diapause is a coping mechanism used by many species of Zooplankton and insects to survive adverse climatic conditions. Hibernation is the period of dormancy during winter months so is also called winter sleep. Their metabolism slows during the winter so they can escape the cold weather. The development of hibernation is exhibited by bats, squirrels, and other rodents.