[View images] To prevent water leakage, please 1) check the spring inside the nozzle to ensure it was positioned correctly before use; 2) fill the bottle with dog water as much as possible to let the air escape and the ball inflate in the nozzle; 3) Please screw the nozzle to check if there is any residue inside and let air in resulting in water leakage; 4) Clean and check the nozzle at regular intervals If your water bottles are leaking, please contact us with photos or videos for refund or replacement. This pet water bottle works for small animals like rabbit, puppies, etc. No screws required, this water bottle is easy to install and easy to adjust in height. Recommend hanging the bottle outside the cage so pets can’t bite it Capacity (ml): 350 (12 oz). Package includes: 1 rabbit bottle 1 (other accessories are not included)