Farm Innovators Heated Pet Bowl, Round, Green, 1-1 2-Gal
This is a very large bowl and great for our dog that stays in an outdoor kennel. We just had 10 degree weather (-5 with windchill) and it did its job. The water still felt cold but I don't think it's meant to feel warm. It did not freeze like the water in our dog's other bowl that sat right next to it. Instructions say to not use on an extension cord, but that is very difficult considering the cord is not very long. We are using it on a 100 foot heavy duty orange extension cord and it's doing fine. We do plan to unplug when temperatures come back up. In no way would I use it on a regular extension cord. This was a great value considering the blue bowls offered by this same company that don't hold as much water and cost more.