An animal housing unit has an enclosed monolithic hutch with an open front and a separate open top pen attached to the front of the hutch whereby an animal will be contained in the unit by the combination of the hutch and pen. The pen has a sliding roof that can be extended over the pen, with an extension that shields a feed bucket location from rain. The units can be supported on a composite steel and plastic base and drain through floor tiles can be used on the base, which can be supported on adjustable supports to support the base above or close to the ground. The roof is bi-laterally curved or partially spherical to promote shedding of rainwater, and gutters are molded into the hutch to channel rain away from the interior living space. Roof guiding and securement mechanisms are molded into the hutch and sliding roof. The sliding roof is double walled for insulation and strength and extruded members sandwich the lower edges of the hutch. The front of the pen bulges forwardly beyond the front bottom edge of the pen, the front has a door, a bottle holder in the front of the pen is wider at the distal end, and the front of the pen tapers in width forwardly and upwardly. The units can be provided with an elevated base, base skirts, a non-slip soft grate floor, a bucket and clip, a rain visor on the pen, back wall and rear corner ventilation, a manure catch pan, treatment flags, tie down hinges, a multiple roof movement system and a bedding tray.
