Is your dog getting enough stimulation and exercise in their day? If you have to work, probably not. Get your dog some more fun throughout the day with the Odin, the modular dog toy that makes them really work for their treats.
This dog toy has varies surfaces that the dog must roll and chase in order to get the treat out of it. No amount of chewing or scratching at it will release the treat, instead they have to figure out the puzzle, get it to the right side and are rewarded with a treat.
The units can be combined in two or more sets for more complex puzzles for more fun and a better workout. They are made of nontoxic plastic. They should roll the toy and not gnaw it so it may take some training to get the most out of it so probably best for smaller dogs. You can get one for $23.