Abstract: Apparatus for convective air therapy blankets for companion animals. Convective air blankets include two sheets joined together to form an inflatable chamber. One of the two sheets is air permeable to exhaust conditioned air toward the animal. The blankets includes fenestrations, slits, straps, and inlet ports positioned to accommodate the anatomy and surgical needs of companion animals. Blankets with fenestrations have an I-shaped opening to allow passage of a limb. The opposite end of the blanket has a slit to drape the blanket around the neck and head of the animal. Blankets with a central access port provide surgical access of the animal's underbody. Blankets also have integral straps for securing the blanket to the animal. Inlet ports are provided to allow connection to an air supply from either side of the blanket or to an edge where the two sheets come together.