Dog heaters are the easiest and most effective way to help your pet stay warm and comfortable during the cold months. They’re also very safe – if installed and used properly. As long as you follow the specific instructions for the installation and usage of the heater you purchase, there’ nothing to worry about. However, it should be said that heaters are not ideal for very small dog houses as there should be some space between the animal and the heater, no matter how well the unit may be designed.