Cat vs. panel heater: which is better?
I was once desperately poor.  Too poor to turn on the heat.  But I did have access to friendly cats, so I've been through this experiment in real life.One cat stuffed under the blankets at night is a significant improvement.  But as you add more and more cats, the improvement becomes only incremental.I eventually learned that two cats was really the best one could hope for.  Best positioning is between the legs, and with the blankets pulled up over my head with a little crack for breathing.  After that, adding more cats doesn't help much.If I was still cold after two cats, I had to break down and turn on the heat.