The critter home with a second full-level of living space. For hamsters, gerbils, dwarf hamsters and mice. Features: Twice the living space with a second level. Exterior exercise wheel. Built-in nesting nook in treetop. Sturdy food dish. 10 oz. water bottle. Add-on accessory locations. CritterTrail TreeHouse is the perfect home for every critter who loves adventure.