News Spokane Photo: Bear necessity Sun., March 3, 2013 The personal touch: Head veterinarian Dr. Karen Wolf clips the massive claws of Boris the polar bear during a physical on Feb. 23 at Point Defiance Zoo & Aquarium in Tacoma. Twitter Email Reddit SMS The personal touch: Head veterinarian Dr. Karen Wolf clips the massive claws of Boris the polar bear during a physical on Feb. 23 at Point Defiance Zoo & Aquarium in Tacoma.