My dear neighbor had a wooden kennel building and she put her old dog and her Christmas chocolate lab in the kennel at night. They kept a heating lamp in there so the waterer wouldn't freeze. Their teenage son locked up the kennel so nothing/no one would bother the dogs. Early Sat. morning we got a phone call from her. She was crying...the kennel was fully engulfed in fire and her dogs were in there. She was hysterical, the teenage son was on a major guilt trip. We rushed over there but there was no way you could get near that building. The fire department found the remains so they could be buried. Let me tell you, when we got home I unplugged all the lights to the coop! Temps are in the upper thirties and those chickens do not need heat over their waterer! The neighbor had a 250wt heating lamp over the waterer. We can only figure that was the source for the fire. I am terrified of using lamps at night now. We only use 60 watt bulbs but still you never know. they even had a heavy duty out-door extension cord running to the kennel. Let me tell you to see someone lose their pets that way is something you will never forget nor the heartache and guilt they are going through. By the way, the dogs were in there as they weren't housebroken and the lab wasn't an inside dog to begin with. I always worried about the chickens getting "cold" but after finding a hen outside all night (missed in head count)..let me tell you they are lots warmer than we give them credit for. please do not use heat lamps when not needed.