Easy maintenance: rubber gasket and double sealing ensure leak operation, keep the cage dry, and simplify cleaning and maintenance. Roller Ball innovation: a roller ball water regulation system provides even dispensing, mirrors hamsters natural drinking behavior, and includes an effective antibackflow function to reduce choking incidents safely. Flexible and functional base: openbottom design allows placement in any cage configuration, sparks hamster curiosity and play, and provides a cozy shelter for rest. Adaptive hydration support: ergonomic curved tip and bodyadaptive structure create a comfortable drinking angle, promoting healthier hydration for small pets. Use scenarios Scenario 1: Daily hydration in a standard hamster cage. The leak design minimizes spills and makes water level monitoring straightforward. Scenario 2: Homes with multiple hamsters or concerns about backflow. The antibackflow feature helps prevent choking and water loss. Scenario 3: Placement near nesting areas or under bedding. The openbottom design enables flexible placement while encouraging exploration and providing a cozy resting spot.