Which is smartest? Parrot, Chimpanzee, Dolphin, Rico

[damien]

Which animal is the smartest?

1. Rico the Border Collie
—(http://en.wikipedia.org/wiki/Rico_(Border_Collie)
Rico the border collie became famous after he was studied by psychologists who verified that he learned more than 200 words—“Rico's vocabulary was thus broadly comparable to that of language-trained apes, dolphins, sea lions, and parrots.”

2. A Dolphin

3. A Chipanzee

4. Alex the African Grey parrot
—(http://www.alexfoundation.org/research/ ... rvard.html)
Alex the parrot also learned the names of many objects and could retrieve them according to color or shape as well as the names of the objects.
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[iri_black]

I would have to say a dolphin. In the documentaries I have seen, dolphin could also recognise the shape of objects and retrieve them.
Also, dolphins are still studied and I think we have a lot to learn about them yet.
But that's only my opinion, of course and I have to say I am subjective, because dolphins fescinate me

[James]

It's going to boil down to what 'smartness', or intelligence means and involves, which has been talked about a lot on the forum before.

[MrMistery]

James is right. I remember a poll about what animal is the smartest. Kyle and myself voted bacteria