Let your little friend have a beautiful source of water. It comes with a attachment hook, so it can attach to the cage walls. It has a compact design which allows you to save space for your little buddy. It works on Gravity principle. It has leak proof seal.Features:-Material: food grade-This great water bottle clips on the side of a cage tightly, so that you pet cannot drop it.-Perfect for small animals, such as hamsters, sugar glider, hedgehogs, rats, mice-No more wet floors and hours of cleaning and drying what got wet from the spilled water!-It's also perfect for long bearded dogs or fury cats, as now they can enjoy drinking water without wetting their mouths and furs!-Unlike the regular bowls that get easily dirty with all the food that pets may put inside, this one keeps water clean and safe, protected from dust or other air pollutants!