The cave bear (Ursus spelaeus) was a prehistoric species of bear that lived during the Pleistocene epoch, which spanned from approximately 1.2 million to around 11,000 years ago. Here's a description:

The cave bear was a massive and robust creature, with a stocky build. It was one of the largest bear species to have ever existed, often reaching lengths of up to 11 feet (3.5 meters) or more when standing on its hind legs. It stood about 5 to 6.5 feet (1.5 to 2 meters) tall at the shoulder. 

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