From Creatures Wikia
The Space Heater COB by Slink injects a hot (fire) object with characteristics similar to the stove. The settings are OFF, LO and HI. LO gives out as much heat as the stove. HI gives out twice as much heat. Creatures can carry the Space Heater when it is OFF, but it will hurt them to carry it when it is on. It is available at Slink's Treasures at TreeSprite's Creatures Grove.