3V0 is right on. As the scientific community has opened its investigations to accept the non-uniqueness of human behavior, it seems there are no uniquely human traits. Our ability in math is often tied to language, but several species of animals have been shown to do simple counting, addition and subtraction without language. Now, a human aboriginal tribe in Brazil (Brazil's Piraha, Science News, July 19, 2008, pp. 5-6) has also been shown to grasp numbers and simple math without words.
Bottom line, we are not unique. Turned on end, I simply can't accept that humans are the only animal that can be cruel. We are not the only animals that have both the capacity for empathy and kill for fun. John