u/Raydium18

I was talking with a friend of mine over the biological evolution of humans and i had a question longing in me for me to ask WHAT EVOLUTIONARY THING MADE HUMAN THE MOST INTELLIGENT ORGANISMS EVER,is it brains or curiosity or what prompted to be like that and why isn't the dolphins or tigers gets the braniac power that we do???

Is it a evolution thingy or other factors contributing to this???

I ain't a biology student so explain to me in simple ways and pls no shaming since i come here for an answer..