Be aware that if a Basenji gets really stressed he is well able to chew through the metal covering of the cable of heating pads.
I have never let my Basenjis sleep without making sure they're very warm at nights especially the older ones who aren't always able to maintain their body heat. Some of mine pile up on each other and some sleep with me. I maintain the sleeping area at 70 degrees F for those that sleep in the living room. I hate warm bedrooms myself!