The Lixit Chew Proof Glass Bottle provides optimal hydration for domesticated small animals, such as rats, guinea pigs, rabbits and small to medium birds. This bottle is suitable to use inside or outside of their habitat, as it comes equipped with an extra support wire and metal mounting spring clips. This bottle includes a chew proof steel cap, stainless steel tube and control balls. Water refrains from dripping with the high performance rubber stopper to keep your pet’s environment dry, while the floating water line indicator allows you to keep track of refills.