Which animal is the cleverest?

Gorilla's are one of the most intelligent species around today. (It can not be dolphin because it is not on the list but I think that dolphins are as smart as gorillas.)

Dolphins. Dolphins are scientifically proven to be smarter than humans, and they are also cute and great at protecting humans from sharks!

Dolphin’s are one of the smartest animals in the world they are known to teach each other, they can organise themselves to work in a team, and they even mourn the deaths of other dolphins. Dolphin’ have displayed the ability to understand and solve complex problems, and will even choose the I don’t know option when they can’t work out the answer, something many humans still haven’t worked out how to do.