Dogs are very playful and intelligent animals. Channel their energy and curiosity into something positive with TRIXIE's Mad Scientist for Dogs. It's designed for the intermediate canine gamer. Simply place treats inside any of the three beakers and cover with our lids with holes. Once the beakers are correctly flipped and balanced upside down, the treats will be released. We've included two sets of lids, each with a different pattern of holes through which your dog must navigate the treat. Mix and match the lids for varying levels of difficulty. The non-slip rubber feet keep the game in place as your dog explores. We've also included an instructional booklet with tips and tricks for challenging and training dogs of all ages through play. Measures 9 x 7 x 13 inches. Weight 2 lbs.