Who are the most intelligent after humans - cats, dogs, monkeys, dolphins or birds?

After humans, who do you think are the most intelligent

i think all animals are very clever,my dog even presses the button at zebra crossings and waits for the bleeps before he crosses
our cat is a clever twot aswell because he annoys me to death with his meowing knowing i will give it somthing to shut it up.
was your views

I think dogs are very clever but cats are clever in a different way. They can get what they want and still maintain that superior attitude they're famous for. There's a bit of the psychologist in a cat. But in my opinion the cleverest animal of all is the monkey..................they're amazing.