There is a K&H Ortho ThermoBed for all sizes of dogs. Its two layers of orthopedic foam are so thick and supportive that even the largest dogs will not bottom out. The unique dual thermostat maintains an even surface temperature of 12-15 degrees above ambient air temperature, to your pet's normal body temperature when in use. The heater is removable far washing.
Recommended for indoor use. One year limited warranty.