Mitzy was Leonard Hofstadter's childhood pet dog.
In "The Maternal Congruence" Beverly mentions off-handedly to Leonard that the family dog, Mitzy had died. Sheldon adds that she was old and blind, and that they didn't have any other choice .
Trivia[]
- In "The Convergence Convergence", there is a photo of a dog on the top shelf of Leonard's dresser in his bedroom. This dog could possibly be Mitzy.