Just as Lennie is dependent on George, Lennie's puppy is entirely dependent on Lennie. Like Lennie, the puppy symbolizes the fate of the weak in the face of the strong.
Lennie's Puppy Symbol Timeline in Of Mice and Men
The timeline below shows where the symbol Lennie's Puppy appears in Of Mice and Men. The colored dots and icons indicate which themes are associated with that appearance.