An animal housing unit (10, 168) has an enclosed monolithic hutch (12) with an open (14) front (115, 14) and a separate open (14)- top pen (14) attached to the front (115, 14) of the hutch (12) whereby an animal will be contained in the unit by the combination of the hutch (12) and pen (14). The pen (14) has a sliding roof (24) that can be extended over the pen (14), with an extension (28) that shields a feed bucket (207) location from rain. The units can be supported on a composite steel and plastic base (121, 143, 170, 180) and drain through floor tiles (163, 196) can be used on the base (121, 143, 170, 180), which can be supported on adjustable supports to support the base (121, 143, 170, 180) 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 (12) to channel (72) rain away from the interior living space. Roof guiding and securement mechanisms are molded into the hutch (12) and sliding roof (24). The sliding roof (24) is double walled for insulation and strength and extruded members (50) sandwich the lower edges of the hutch (12). The front (115, 14) of the pen (14) bulges forwardly beyond the front (115, 14) bottom edge of the pen (14), the front (115, 14) has a door (20, 40, 58), a bottle holder (18) in the front (115, 14) of the pen (14) is wider at the distal end (302, 304), and the front (115, 14) of the pen (14) tapers in width forwardly and upwardly. The units can be provided with an elevated base (121, 143, 170, 180), base (121, 143, 170, 180) skirts (190), a non-slip soft grate (196, 204) floor, a bucket (207) and clip (209), a rain visor (220) on the pen (14), back wall (212) and rear corner ventilation, a manure catch pan (260), treatment flags, tie down hinges, a multiple roof movement system and a bedding tray (300).Selon l'invention, une unité de logement d'animaux (10, 168) comporte un clapier monolithique enfermé (12) avec un avant (115, 14) o
