Charlie's favorite toy has to be the Kong. Of course, the reason he loves the Kong, because it is always stuffed with something yummy.
If you ever need a fantastic toy to occupy your pup while he/she is in the crate or company is over and you need something to have them really focus on... try the Kong. The best part about it is you can fill it with anything your dog loves, such as yogurt with a hint of peanut butter, and pop it in the freezer. After the freezer, the filling is a lot more work for the pup to get out!