Sun bear
bear found in tropical forest habitats of Southeast Asia
Do sun bears stay active during winter?
The sun bear is a species in the family Ursidae occurring in the tropical forests of Southeast Asia.  Sun bears do not seem to hibernate. Hibernation is a seasonal heterothermy characterized by low body-temperature, slow breathing and heart-rate, and low metabolic rate. It most commonly occurs during winter months.
What characterizes the state of hibernation that some animals go into during winter? Are sun bears known to not exhibit the behavior described by #1?