The cooling is from the side and bottom usually.....

My same model laptop on my desk is not that warm, and on 24/7

it could overheat.

youtube has many, many, many videos for cats, and they are many hours long.

But, my previous laptops have had better heat fans/dissipation.

One time I was interpreting a lecture at the University of Nebraska. It was a science course, the prof asked the class who they thought had a higher sperm count, the prof, middle aged, or the young men in the room. The answer was the prof. Because the chemicals used in plastic and the fire retardant used in laptops have a similar molecular make up as estrogen. They think this is why younger men's sperm counts are lower these days than before. He suggested the guys in the room stop putting their laptop on their laps.

on the keyboard., after she informed me that it was time for bed. I would even flip the keyboard up, and she would nose it down. Never seemed to have any effect. (Actually, Ithink the kits spent nights on the 'net, because I would wake up to odd messages, and the screen being on a different page.

That not even Microsoft knows about. Some are hard to recover from.

Why risk running your electronics warmer than necessary?

She obviously craves the warmth.

Although she does also love to watch the birds and squirrels on youtube.

... having it make some keyboard entries while it is camped out there ?

Maybe I'd better look at the history. She might be going anywhere on the Internets!

But if you're just using the laptop to provide the kitty access to CatTV and nothing more critical, then its all good in the hood.