In which Walt Disney film does the character Aunt Sarah appear?

"Lady and the Tramp" is a 1955 American animated musical romance film produced by Walt Disney and released to theaters on June 22, 1955 by Buena Vista Distribution. The 15th Disney animated feature film, it was the first animated feature filmed in the CinemaScope widescreen film process. Based on "Happy Dan, The Cynical Dog," by Ward Greene, Lady and the Tramp tells the story of a female American Cocker Spaniel named Lady who lives with a refined, upper-middle-class family and a male stray mixed-breed dog called the Tramp. When the two dogs meet, they embark on many romantic adventures and fall in love.

Verna Felton's voice was used as Aunt Sarah, Jim Dear's aunt (revealed to be the sister of Jim Dear's mother in the Greene novelization of the film) who comes to take care of the baby when Jim Dear (the fatherly human figure) and his wife Darling leave for a few days. She is a well-meaning busybody of a maiden aunt who adores her Siamese cats, but does not believe that dogs should be around babies. She blames both Lady and Tramp for the baby's crib being knocked over, not knowing that they were actually protecting the baby from a vicious rat. However, she sends a box of dog biscuits for Christmas in the final scene of the film in a presumed attempt to make amends for her mistreatment of the two dogs.