My dogs refused to play with a pair purchased (one for each of them) - I think they didn't like it because it wasn't easily picked up with their mouths and kinda unwieldy compared to their usual toys (tennis balls, rope toys, squeaky balls, etc). It has that nub at the end so they can pick it up - but they didn't think it was fun at all... Attempted to make the pair more to their liking by tying rope toys to the nub, but that just turned their beloved rope toys into duds.