The cave bear is now extinct but has long coexisted with the brown bears that we know today. 
While the two species were similar in some respects, the cave bear was physically larger, reaching up to 1.30 meters on all fours and 3.50 meters when standing up. 
It weighed three times the weight of a brown bear, 450 kg. 
Lonely in nature, the cave bear spent the spring feeding and so can hibernate throughout the winter. It was not unusual for some to perish during this period for lack of food. Many bones have been found at the bottom of caves, hence their name 'cave bear'.
 
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