A young black bear ambled through a medical clinic's automatic door early Friday and into a gastroenterology lab, the perfect place for a tranquilizer. "I think the person in the waiting room was pretty surprised," said Todd Sandman, director of public relations for Presbyterian Health Care Services, which runs the lab in Rio Rancho, on the outskirts of Albuquerque. It was shortly before 7:30 a.m., and there weren't many people in the lab when the bear showed up, Sandman said. All the humans evacuated while animal control officers were called in to figure out what to do with the bear.