Abstract: A said Device comprises an animal sleeping bag with sewn, integral, or otherwise attached connectors. At least one connector, from a variety of connectors, releasably fastens the Device substantially within the interior and to the entrance of an animal enclosure, such as a dog house, a sectional dog house, animal crate, or other suitable animal housing structure. The preferred Device comprises at least two layer members, or the Device can comprise a single-layer member or cover. At least one layer member of the Device is shaped so that it swathes an animal inhabitant. The releasable fastening of the Device to an animal enclosure causes the Device to remain in a substantially stable configuration, ensures that an animal inhabitant can have at-will accessibility to a lodging compartment, and makes the Device removable for cleaning or replacement. A connector can comprise off-the-shelf hardware or can be manufactured from available products.