@Jayross: Easy why not because it is a console version not a PC or Mac version. Xbox didn't get PC versions of the Orange Box L4D or L4D2 why would Portal 2 be any different just because it is on the PS3?
Yes, at least crows do. Crows even distinguish between humans. When the University of California did some research on crows by netting them (and releasing when they were finished) the students that netted them couldn't walk by those birds again without being squawked at and bothered by the birds. Now when they need to do similar experiments they put on big funny masks so the crows do not recognize them.
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