A modular animal enclosure includes a housing comprising a top portion
affixed to a base portion to form a sheltered interior. The housing
includes a door aperture and a climate conditioning aperture. A remove
ably attachable climate conditioning unit is installed over the climate
conditioning aperture to facilitate a flow of atmospheric air from the
exterior environment into the interior of the housing. The climate
conditioning unit can variously comprise a cover assembly, a heating
unit, a cooling unit and a forced air unit, and different types of units
can be installed at different times. In another aspect, the bottom
portion can be selectively hinged to the top portion on opposing sides of
the housing to allow pivotal movement of the top portion in two opposite
directions, as desired to permit access to the interior of the housing
for inspection, maintenance and cleaning of the interior.