Crows are the smartest birds in the animal kingdom who give zero ducks. Want proof? Just take a look at any of the funny photos below. Crows (and corvids, the family that includes crows, ravens, rooks, and magpies), like to pull the tails of birds and animals who are twice as big as them because they are not afraid. Some argue that this unusual bird behavior was developed to snatch food away - but the other theory is that these cool birds simply like to behave like major assholes.

Also, if you think there's nothing cooler than a bald eagle flying up high in the sky in all its terrifying glory - think again. Crows use majestic eagles as their chauffer boys and personal taxi drivers to take them where they need to go.

One of these intelligent animals even stole the dentures from a man who saved his life - first stealing the poor guy's heart, and then, his smile. Do you need more evidence of the incredible badassery of these smart animals?