Mark Walton is an American story artist and voice actor at Walt Disney Animation Studios. Walton is best known for voicing Rhino the hamster in the 2008 animated film Bolt.
Mark Walton was born on October 24, 1968 in Salt Lake City, Utah, the oldest of seven children. Although he is not a professional actor, Walton said in an interview, I liked acting in high school and college. I enjoyed it. I think at some point I decided that if I was really going to be a professional actor that it would take at least everything that I would have emotionally or physically and I knew that I really wanted to pursue art. He graduated from Utah State University in 1998 with a degree in illustration.
Source: Wikipedia