Not all dogs like to play with toys.
Nixon has never, ever shown any interest in any sort of toys, balls, squeakies, frisbies. Nothing.
Ruby likes 'certain' squeakies, but doesn't go crazy.
Nigel loves ALL squeakies...he just came to us this way.
Some dogs play. Some just don't.
We have had several dogs of varying breeds over the years who never liked to play.