<Li> Steve Coogan also voices Reginald, a malevolent Himalayan cat . </Li> <Li> Albert Brooks as Tiberius, a curmudgeonly red - tailed hawk . </Li> <Li> Chris Renaud as Norman, a guinea pig who keeps getting lost trying to find his apartment . </Li> <Li> Michael Beattie as Tattoo, a slow - witted tattooed pig who is one of the Flushed Pets . </Li>

Who plays the guinea pig in the secret life of pets