I had originally purchased this in October 2022 for my senior boy cat. A couple of weeks later, I helped him cross the rainbow bridge, and so, the bed sat unplugged and unused for a while.I recently noticed my senior girl struggling to jump/climb as much as she used to, so the bed came back out, got plugged back in. I have noticed a tremendous difference in how she carries herself now. The bed seems to work very well for her - she seems much more comfortable when she is moving. While she isn't jumping up as much as she used to, she's no longer moving slow when she's jumping up or down from other furniture.My middle aged cat also loves this bed when its on as well. As far as I can tell, she is otherwise totally fine, and seems to just like the heat.