While I don't have cats, I have two shetland sheepdogs, one 22 lbs, the other 30 lbs. My 30 lbs girl was getting far too good at removing kibbles from her Premier Waggle and her large Tricky Treat Ball. Neither of these toys were adjustable in how much comes out, unless you want to get larger kibble and I didn't want to change kibbles.
I stumbled across this item and ordered one because I like the idea that it's adjustable. There are two types of holes the food can come out of: a set of 3 smaller round holes, and another set of 3 larger holes. You adjust which holes you want by unlocking a little mechanism and twisting half of the ball so that it's where ever you want it. I have it set on the larger holes but the large holes are too big for my kibble, so I've twisted it to where only part of the larger holes are revealed. I'm also considering covering one of the 3 holes with tape on the inside so kibble can only come out of 2 holes.
The dogs love these, they roll them around with their noses. My younger boy sheltie was intrigued by it even when it was empty, he can *just* fit it in his mouth and he "noms" on it. He might be able to crack the plastic by doing this, so I take it away when it's empty.
You fill the toy by unscrewing an end cap of the ball. It's a good sized hole so it's easy to fill. My boy sheltie is able to grasp the little knob on this cap and unscrew it so all the kibble dumps out (it doesn't have to be turned far, less than a half turn). Clever boy! I covered the cap with electrician's tape so he can't unscrew it. However, he can also grip both halves of the ball and twist them so that the large holes are fully exposed, even though it's supposed to be "locked". I'll try tape again there to keep him from twisting it. I don't knock a star off for this because this toy wasn't made for dogs, it's made for cats who are quite a bit smaller than my dogs. I just wanted to see if I could make this work for my pups, and with a little fiddling, it will.
My girl sheltie only rolls this ball around to get food out, she doesn't try to open it like the boy does.
I'm ordering another so my pups don't have to share a ball.