Easy maintenance: Rubber gasket with double sealing provides leak performance, keeps the cage dry, and simplifies cleaning and maintenance. Natural drinking experience: Roller ball dispenser delivers smooth water flow, mimics natural drinking motions, and includes antibackflow to reduce choking risk during use. Versatile cage compatibility: Designed for cages with uneven surfaces, the base encourages exploration while offering a safe space for retreat and relaxation. Pet friendly bottle design: Contoured fit with a curved drinking nozzle enables pets to drink in a natural, comfortable position, supporting easy use and daily hydration. Use scenarios In cages with uneven shelves or corners, the bottle base remains stable, delivering reliable hydration without pooling water or leaking. During active play or climbing, the antibackflow feature helps prevent spills and keeps bedding and surroundings dry. For or sensitive hamsters, the natural drinking position promotes comfortable drinking and aids in daily hydration from day one.