Most greys don't play with toys, in my experience. When they're excited and they're doing their "Oh-my-gosh-Mom-is-home!" dance, they'll maybe pick up a few toys and toss them in the air. But after a few minutes, they'll pass out on the couch.

So, no, some dogs just don't play and it's just another aspect of what makes our dogs such unique individuals. However, BCs are, on the whole, very intelligent and active creatures. To be honest, it concerns me to hear a 2-year-old BC sleeping 14 hours a day. Is she totally healthy (how's her weight)? Also, how are you getting her to play? Since watching first-time dog owners trying to elicit play with their dogs, I've come to realize what a language barrier there is between us and the canines