Yes, he’s got a stone in his claw and is rubbing it against his skin. Researcher Volker Deecke, of the University of Cumbrian, in the UK, captured this picture in Glacier Bay National Park in Alaska. It’s the first evidence ever of a wild brown bear using a rock as a tool.
Source: Daily Mail
Photo: Volker Deecke
Deecke, V. (2012). Tool-use in the brown bear (Ursus arctos) Animal Cognition DOI: 10.1007/s10071-012-0475-0