The snack bottle is an ideal dog toy which offers your pet a variety of activities heres how it works simply unscrew and remove the bottle base fill the bottle with small treats and call your pets attention to the toy in order to receive the treats in the bottle your dog has to move the cotton rope and the bottle back and forth the bottle is made from tough plastic material and the nubbed rubber ball attached to the bottle neck promotes dental care and massages the gums of your pet hun