If you stopped buying 3 of everything (and toys just "showed up" without specifically giving them to anyone), wouldn't they eventually figure it out? Bauer and Lucy (French Bulldog) figure it out on their own. Bauer doesn't like big stuffies, so Lucy plays with all of those. Bauer loves little stuffies and will chew on them until they are soggy and disgusting, after that Lucy won't play with them. Sometimes she will hide them in places that he can't fit (under the couch in the living room, behind my desk, etc.). Lucy doesn't like Nylabones or marrow bones, so Bauer takes all of those. Kongs and other chew toys they both play with.