Dog Brick is a fun, educational and entertaining activity toy for your dog. Mentally stimulating your dog is just as important as physical exercise.Hide treats in the recesses under the sliding trays and let your dog search by using his paw or nose to try to pull the trays aside.Increase the level of difficulty by placing the white bone-shaped plastic blocks in the middle of the Dog Brick. String can be tied through the holes in the bricks to make it easier for the dog.Dog Brick Level 2 Activity Toy Facts:Level 2: a slightly more difficult activity toy for dogs.From Swedish Nina Ottosson.Provides many hours of entertainment.Trains your dog's mental ability.Also suitable for cats.Size: 33x23.5x5 cm.