Abstract: A pet sleeping bag comprising outer and inner sleeves which each define an interior compartment and a neck which communicates with the interior compartment. The inner sleeve is disposed within the interior compartment of the outer sleeve, with portions of the inner and outer sleeves adjacent the necks thereof being attached to each other in a manner wherein the necks of the outer and inner sleeves collectively define a neck of the sleeping bag. The neck of the sleeping bag communicates with the interior compartment of the inner sleeve which defines the location in the sleeping bag in which a pet normally sleeps or rests.