Our Quick Guide:
 
Difficulty: Medium (to Hard)
Food/Treats: Wet
Interactivity: Can Do Alone
Durability: TOUGH!
 
A treasure trove of chewing! It has four spaces to stuff with treats (or just with wet food) and the gripper ridges inside will make getting the nibbles out a decent challenge. We like to push a soopa dental stick through there, or sometimes even things like a piece of rabbit ear (or similar chew) to really up the challenge.