Instruct: Classify Amazon reviews into positive or negative sentiment
Query: K & H pet bed heater malfunction issue

Purchased this bed heater for my small dog to replace one that had finally failed over the years. This new heater pad caught me by surprise when after setting it up per instructions, tested it and let my dog use it, I noticed that she would get on the bed, then, 10 minutes or so later, get off of it. I was suspicious of why she would do that and got my infrared temperature device and found the top temp was running at 108 degrees (way too warm). I also noticed noticed when I tried to readjust the bed position and add more insulation, the temperature reading on the bottom side of the bed was very hot and running at 122 degrees. Obviously, this is unacceptable, unsafe for my pet and will be returned immediately. I recommend if you purchase this bed heater or another manufacturers device, that you check temperature, top and bottom, regularly to insure safety for you and your pet.