Animals may well be the ultimate source of cuteness in the universe. Even when they're sleeping, they're adorable - in fact, when they're having 40 winks, they're approximately 40 times more wonderful.
To prove our point, we've compiled 22 videos of pets taking a nap, be they parrots, piglets, puppies or piranhas. Okay, well maybe not piranhas - will guinea pigs do? Lovely stuff.
So if you fancy smiling - and we're guessing you do - and you're got a soft spot for sleepy beasties, then click on, dear internet user, click on...