Look, we get it. You've had a long day and you just want to take a nap. You should take a load off and relax. Just don't do it anywhere these people.
Of course, there's no danger of falling asleep if you happen to be in an airport. You'll be lucky if you can nod off even for a few seconds before that crick in your neck wakes you up.
On the other end of the spectrum, you have cats, who can fall asleep in literally any place or position. Here's proof.
But cats aren't the only funky sleepers! The pups are also drifting off to dreamland in the most entertaining positions. Sweet dreams!