A pet housing includes forced air ventilation and filtration for circulating air within the housing, thus cleaning air in the housing and mitigating the effects of pet dander, dust and odour. Air inlets and outlets (52) are in the vicinity of the floor (16) of the housing. A sensing device detects whether an animal is occupying the housing, and a controller coupled to the detector controls selective operation of one of two different fans depending upon whether or not an animal is occupying the housing.
