This Nina Ottosson Dog Finder Interactive puzzle dog toy NEW plastic version-just released With the Dog Finder, your dog learns to look for treats by moving blocks with its paw or nose in four different directions. Under the blocks there are hollows where treats can be hidden. The blocks can only be lifted at the end of each track to gain access to the treat. Teach your dog to understand words like: wait, go ahead, back, find, leave, sit etc., while you are playing and having fun. Once your dog understands they need to move a block along the track to get tot he treat, try adding more blocks to each track. This puzzle toy is priced a little less than the wooden version and you can put it in the dishwasher to clean.