(I haven't researched this, I just clipped it from a series of articles I was browsing through. Seemed like the real deal to me. j6)


An African gray parrot named Alex may have shown that the species is capable of understanding the concept of "zero." The bird, began using the word "none" when presented with an absence of objects during come numerical tests. Alex was taught that "none" means "lack of information" several years ago. Though zero and none are not identical, it seem like that parrot has expanded the defination to include the numerical concept. If further tests show that the parrot really understands arithmetical zero, he will be the first non-primate to grasp the concept, and the first animal to do so without training.