I bought the large for Winter (4 month, groodle), I was expecting the hole thing to be bigger. This is (don't quote me) the only toy that holds liquid. Which makes it great for freezing broth, yoghurt in. Great for freezing little snacks. If you're looking for a toy that holds more, then you should look else where but if you're looking to freeze liquids, this is great.
My pup absolutely loves it with frozen bone broth or frozen treats !
My Toller loves it, gets his mind thinking and last a while for him. So strong and durable.
I have a toy poodle who, for some reason at 6 months, decided to become fussy (so I hovered and chased her around with the bowl and spoon). I've tried licki mats and puzzles but those seem to bore her. So I decided to get her the Penguin and she finishes every meal. I am a converter now, thank you!
We love how durable this toy is. My mum always put frozen mince which takes me a long time to take out even if we have the small one.