that is a good idea about putting the dog food in instead. i am going to look for this at the pet store the next time i go.

my dog loves to play with a tennis ball too. she usually destroys every toy we give her, maybe i will try this one.

my dog does the same thing, destroys all the plush toys and doesn't really like to play with the kongs unless they have treats. we haven't bought the squeeky plastic toys because we KNOW she will eat them. this sounds like a good buy.

since Zeus likes liver, have you tried the kind by "Authority"? My dog loved them, we used them training her. You should cut them into smaller pieces for training. I purchased them at pet smart.