Adam Sandler, Cher, Jon Favreau, Sylvester Stallone and Judd Apatow are set to voice the animals in MGM's live-action comedy The Zookeeper, that stars Kevin James and Rosario Dawson.
According to Variety, Sandler's Happy Madison shingle is also a producer on the film. Sandler will voice a capuchin monkey, Cher a giraffe, Favreau a bear, Stallone a lion and Apatow an elephant.
Jim Breuer, Faizon Love and Bas Rutten round out the voice cast.
The film centers on zoo animals trying to teach the keeper their methods of dating and mating to help him win back the woman of his dreams. Frank Coraci is directing from a screenplay by Jay Scherick and David Ronn, James, Rock Reuben and Nick Bakay.
Production will start in late summer for an Oct. 8, 2010, release. MGM won a bidding war last year for the "Zookeeper" spec, paying $2 million against $3 million, while the studio was ramping up a slate of homegrown projects.