Common behavior, yes, but usually in a cage and not on a laptop screen! :)

Zzz.

I enjoy these types of puzzles, but what a horrible interface!

What a horrible interface!

Yeah, I mean, who wouldn't rather have a machine greet you when you're in distress, rather than a silly human being who might be able to reassure and comfort you? You may be able to automate certain tasks in a situation like this, but you can't program a robot to have a good bedside manner or genuine human emotions.

"Artist"