Doggone Cats (1947)

Plot

Wellington, a dog, is entrusted with delivering a package to Uncle Louie and warned never to release it. Sylvester and a second cat—both of whom Wellington has been bullying—seize the opportunity for revenge. They keep snatching the package away, and at one point toss a lookalike off a bridge. Wellington manages to recover the real package several times, yet he can never hold onto it for long.