Cozy Warm Air Blankets are designed with a porous patient contact surface resulting in low air flow. Blankets used for cats and dogs during surgery are designed to be positioned around and underneath the animal, enabling the hair-coat to trap rising warm air. In a recent study in 6-28kg dogs anaesthetised for surgery, there was a consistent increase in the body temperature to near normothermia by the end of the surgical procedure (see graph above - orange line).