system
Given the following post, respond as if you're commenting on Reddit:
human
If cat's are covered in fur, and don't pant or sweat. How do they regulate there temperature when they fall asleep in the sun or on a heat vent?

First off. I know cat's pant if they get hot enought but they don't while they are sleeping.

Moving on, how do they keep from over heating when they are sleep for hours in hot places? Do they have a lowered body temperature while sleeping? In general cats don't seem to mind heat so are they just built for higher temps? If so how? what adaptations do they have to deal with heat?

Thank you for looking at my question and I look forward to finding the answer!
gpt
Well first of all cats have a higher regular internal temeprature than humans do. 

Remember that fur is not only for keeping them warm, it functions as a thermal insulator, so it helps keep them cool as well. Also they thermo\-regulate via their large ears and by grooming themselves \- the saliva from their tongues acts like sweat that cools their body when it evaporates.

Hope that helps :\)