This may be divergent from the current vein of the discussion but the 
above is incorrect.  Saving a single child at the expense of your own 
life is _not_ in your best interest in terms of DNA replication.  In 
terms of DNA similarity, direct siblings and individual parents have 50% 
of the subject's DNA, blood aunts and uncles and nieces and nephews have 
25% of the subject's DNA, and 1st cousins have 1/8 of the subject's DNA. 
In order to make this a positive tradeoff in terms of genetic material, 
one would have to save more than two parents or siblings at the expense 
of one's own life, more than four aunts, uncles, nieces, or nephews, and 
more than eight first cousins.  The only _even_ trade for saving a 
singular life by sacrifice would be to save one's own identical twin.
So, even genetically speaking, it is in one's own interest to stay alive, 
even if that means letting others die.
Going along with the discussion of animal intelligence, it is necesary to 
have a universal definition (this is stating the obvious).  However, to 
give evidence in favor of at least intelligence in chimps, studies were 
done to examine their problem solving abilities.  Bananas were hung from 
a branch and the chimps were given a few boxes and some sticks that would 
fit into one another to make a longer stick.  Most of the chimps kept 
trying to get the bananas using a box to stand on and a stick, or one and 
not the other.  One chimp, however, sat and watched his fellows.  Finally 
this watcher got up, walked over to the boxes, stacked them on top of 
each other, stuck the sticks together, climbed up on the boxes, and 
knocked the bananas down.  This showed that chimps, in the least were 
capable of some form of mental event and were capable of assessing a 
situation and solving a problem.  The study was done in regard to the 
Gestalt school of psychology i believe.
That's it.
Ben
-- Would you like some cake? No thank you, My ears are too sweet now A strange choice of words, but forensically its true -Little Feat from "Representing the Mambo"