My dog LOVES these things. Put a few small treats inside them, and she'll paw them, bite them, shake them, and roll them with her nose until a treat falls out.

Here, the contest between your traditional cookie treats and a Stuff-A-Ball is no contest. If I give my dog a bone, she's finished in 30 seconds and begging for another one. Instead, if I put a half-dozen mini-treats in one of these balls, it takes her 15 minutes to get them all out, and she has fun in the process. Make 'em work for it!

My dogs love playing with this ball - it even cleans their teeth while they chew on it!