This water fountain for small animals is perfect for rabbits, guinea pigs, hamsters, ferrets, and other small pets. With a large capacity of 800 ml, it provides fresh water for up to 5-7 days and is easy to use, quiet, and practical. Features: Important information: Fits wire cages and grids with a width of 2.8-5.5 cm. The height of the cage opening should be at least 3.5 cm. Check the pictures to ensure compatibility and avoid the bottle becoming unusable. Large capacity: 800 ml water bottle provides your small animals with fresh water for several days without daily refilling. Hanging design: Attaches with a twist knob and is difficult to tip over. The height can be adjusted according to the pet's size to protect its neck. Automatic gravity refill: The water bottle automatically refills with gravity and stops refilling when the water in the holder reaches a certain level, preventing spills and keeping the water fresh. Quiet and practical: Unlike cola packaging, this water fountain makes almost no noise when your pet drinks. The external bottle holder makes it easy to refill water and clean the bottle. Uses: Perfect for rabbits, guinea pigs, hamsters, ferrets, and other small animals. Easy to hang in the cage and safe for daily use.