<Li> George Givot as Tony, owner and chef of Tony's Italian restaurant . He and Joe both have great affection for Tramp . </Li> <Li> Lee Millar as Jim Dear, the fatherly human figure and Darling's husband . Millar also voiced the Dogcatcher . </Li> <Li> Peggy Lee as Darling, the motherly human figure and Jim Dear's wife . Lee also voiced Si and Am, Aunt's Sarah's twin Siamese cats with a knack for mischief and never - ending trouble; and Peg, a stray female Pekingese whom Lady meets at the pound (along with the other dog inmates she was put in a cage with). The names of Si and Am are a play on the country of Siam and the idea of "Siamese twins", the terminology of the time for conjoined twins . It is implied that Peg had a relationship with Tramp in the past, through the lyrics of the song she sings (He's a Tramp). Peg was formerly from the "Dog and Pony Follies" (dog and pony show); either the show ended or she was left behind . Peg has a Brooklyn Accent . </Li> <Li> Stan Freberg as the beaver, a clever, hard - working beaver at the zoo who speaks with a lisp . He gnaws off the muzzle that Aunt Sarah had placed upon Lady after Tramp realizes that the muzzle is just what the beaver needs for pulling logs . This character would later serve as the inspiration for Gopher from Winnie the Pooh and the Honey Tree . </Li>

Who sings he's a tramp in lady and the tramp