every small step toward recognizing intelligence of others is a great leap for humanity. I think before human species is able to move any further in its development, the first step it must to make is to step out of the "i'm the top of the God's creation" closet.

http://www.npr.org/2011/01/20/132650631/new-language-discove... :

---------------

So he devised a test. He had four (human) volunteers walk through a prairie dog village, and he dressed all the humans exactly the same — except for their shirts. Each volunteer walked through the community four times: once in a blue shirt, once in a yellow, once in green and once in gray.

He found, to his delight, that the calls broke down into groups based on the color of the volunteer's shirt. "I was astounded," says Slobodchikoff. But what astounded him even more, was that further analysis revealed that the calls also clustered based on other characteristics, like the height of the human. "Essentially they were saying, 'Here comes the tall human in the blue,' versus, 'Here comes the short human in the yellow,' " says Slobodchikoff.

Amazingly, it doesn't stop there. Slobodchikoff's next move was to see if prairie dogs could differentiate between abstract shapes. So he and his students built two wooden towers on each side of a prairie dog village. They then made cardboard cutouts of circles, squares and triangles and ran them out along a wire strung between the two towers, so the shapes sort of floated through the village about three feet from the ground. And the prairie dogs, Slobodchikoff found, were able to tell the difference between the triangle and the circle, but, alas, they made no mention of the difference between the square and the circle.

---------------------

I wonder how aliens analyze our intelligence:

- sent round blue flying saucer - a lot of buzz

- sent stick-looking device http://abcnews.go.com/International/ufo-china-closes-airport... - a lot of the same buzz.

Conclusion: probably the humans can't distinguish the abstract shapes.