We bought this
Omega Paw Treat Ball when we were going to pick up our puppy. It has a single hole to fill it with treats or food. We use the dog's food and he loves it. It has become a special treat while he is crated during the morning hours. The ball is easy to fill and it doesn't dump a bunch of food all at once. I definitely recommend this ball! This type of treat toy is not cheap though. I think we paid over $10 for this ball at Petco, but it's made of a heavy plastic and will last for a very long time. You can get this ball on Amazon for about $11.
