A dog garment for retaining body heat comprises a tubular neck portion for slipping over a dog's head, a torso portion and an anchoring portion, each including heat-retentive material. The torso portion depends downwardly from the neck portion and extends posteriorly on the dog to an anchoring portion that surrounds the sides of a rib cage of the dog in the posterior section of the dog's rib cage. The torso portion has a chest covering and an intermediate portion situated between the chest covering and the anchoring portion. In the region on the back and sides of the dog, between the neck portion and the anchoring portion, the garment is sufficiently free of material so that the garment can be secured to the dog when the dog is wearing a typical harness without interfering with operation of the harness.
