A nine foot tall polar bear weighing 922 pounds (66 stone) has successfully undergone a root canal.
Boris, a resident at Washington’s Point Defiance Zoo and Aquarium, underwent the four-and-a-half hour procedure on Saturday.
The 27-year-old bear also received minor surgery on an injured eyelid and a general check-up by a team of staff led by oral and maxillofacial surgeon Jim Reed, The Seattle Times reported.
Scroll down for more pictures
Boris is one of three polar bears at the Zoo's Arctic Tundra exhibition, which mirrors a coastal setting near Point Hope, Alaska.
He was rescued from a Mexican circus in Puerto Rico ten years ago.