Diana Frieling (l to r), owner California Reindeer Rentals holds onto Yukon as she tries coax Wind Song, nicknamed Windy, onto the elevator at the California Academy of Sciences while being led by Marie Reeves, shepherd, on Tuesday, November 22, 2010 in S

Diana Frieling (l to r), owner California Reindeer Rentals holds onto Yukon as she tries coax Wind Song, nicknamed Windy, onto the elevator at the California Academy of Sciences while being led by Marie Reeves, shepherd, on Tuesday, November 22, 2010 in San Francisco, Calif. The reindeer are part of of the "Tis the Season for Science" program and will be on display at the Reindeer Rendezvous in the east garden from November 23, 2010 through January 2, 2011. Along with the Reindeer Rendezvous, the"Tis the Season for Science" program highlights include an igloo presentation dome to view the a 5 minute show on the North Pole, Polar Jeopardy - an interactive game show, festive performances and other events. (Photo By Lea Suzuki/The San Francisco Chronicle via Getty Images)