Hugglehounds Knotties are the original knotted, plush dog toy! All Knotties are made with exclusive Tuffut Technology, a durable three-layer lining on the inside and soft and cuddly on the outside. Natural tugging instincts are satisfied by the soft fabric, knots in the limbs and squeakers. Knotties promote healthy exercise and mental stimulation which makes them a hit with owners, dogs, and puppies of all sizes and breeds. All Hugglehounds plush toys can be machine washed over and over.