K&H Thermo Basket Pet Bed. The K&H Thermo-Basket Pet Bed has firm sidewalls accompanied by a soft cushion filled with polyfil. The 4-watt heater is removable for all season use. Pets will love to snuggle up in the enveloping warmth and softness of this bed. The pillow is completely machine washable. MET listed. Heated pet bed measures 15" x 15", perfect for cats and small dogs