1. The duration of time during which an animal enters a state of dormancy characterized by decreased metabolic rate, body temperature, and physical activity
During the hibernation period, bears remain in their dens without eating or drinking for several months.
Durante o período de hibernação, os ursos permanecem em suas tocas sem comer ou beber por vários meses.
2. A season or timeframe when certain organisms reduce their activities and enter a dormant state to survive harsh environmental conditions
The hibernation period for ground squirrels typically lasts from October to April.
O período de hibernação dos esquilos terrestres geralmente dura de outubro a abril.