A garment for a mammal, such as a canine, is disclosed having a flexible web with a first part of a two-part hook-and-loop type fastener on an outer surface, and optionally on an inner surface, thereof. The flexible web includes at least one tab at a peripheral edge thereof that each include a second part of the two-part fastener on an inner surface thereof, and optionally on an outer surface thereof. The flexible web may further including at least one aperture therethrough for receiving a member of the mammal therethrough. An accessory is selectively attachable to the web and includes at least one of the second part of the two-part fastener. The accessory may include a thermal pack adapted to radiate heat to or absorb heat of the mammal at the desired location thereon, or to lower the temperature of the mammal proximate the desired location thereon. The accessory may take the form of a plush animal, for example, which includes at least one selectively closable pocket for containing the thermal pack, the aromatic substance, or other items such as water, food, treats, or the like.