May 20, 2013 8:08 PM
Two 13-year-old mountain lions at the Desert Museum are retiring due to arthritis that makes it difficult for them to get up and down the exhibit's steep slope.
They will stay at the museum and live out their lives in a non-exhibit space created just for them.
Meanwhile, a new mountain lion has arrived. He is an orphaned cub from San Jose, California.
The five-and-a-half month old weighed only 15 pounds when he was found but he's missing one thing - a name!
The Desert Museum is holding a contest to name the big cat. The deadline for entries is June 21.