My dog loves this thing a ridiculous amount. We have tried various slow feeders and puzzle feeders, but this one has stood the test of time! Always a favorite. It's too large for my dog (a lab) to pick up with his mouth, so he can't just throw it like he can the Kongs and other smaller dispensers to get the food to come out. He has to roll it with his nose and feet, and his tail is wagging like the mad the whole time. Keeps him occupied, good enrichment, good quality material. It's easy for me to fill, too. I bought a few of them to have as back ups to keep at my parent's house and other places my dog goes so he always has one. The dispensing holes are too small for Charlee Bears or other larger treats though, which is fine by me, because the size of hole is absolutely perfect for his meal kibble and small treats.