Vila, the third-oldest western lowland gorilla in the U.S., unwraps presents while celebrating her 52nd birthday at the San Diego Zoo's Wild Animal Park in San Diego, California, October 28, 2009. Vila received presents full of fruit, nuts and seeds, and ate a peanut butter-frosted banana ice cake topped with carrot candles. REUTERS/Ken Bohn/San Diego Zoo/ Handout (UNITED STATES ANIMALS SOCIETY ENVIRONMENT ANNIVERSARY) FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS