This Level 3 Nina Ottosson Dog Worker interactive puzzle is excellent for providing the enrichment your pet needs while also slowing down eating thus helping to assist with good digestion and avoid bloat and upset stomach from eating food too fast.
It features a spinning wheel in the centre that hides and reveals the treats or food, and also has swivelling fins and sliding blocks that reveal the food or treats. 
Like all Nina Ottosson puzzles, it is BPA free. And there is also no PVC and no removable parts, thus making it a safe option for you and your pet.