Goodness me this is a tough puzzle. I feed meals in a treat ball but it was getting a bit easy so got something new for my boys. Went for a small for my min schnauzers and they can't get their mouth round it (as per advice) but does make it difficult for them to pick up.
For now I'm using very small treats and I have taken out the rope until they get the idea. My boys are big foodies but one of them gave up even then! (Posted on 06/04/2011)