http://www.ebaumsworld.com/video/watch/329722/
Alex, and African grey parrot, was the subject of a thirty year experiment by animal psychologist Irene Pepperberg.
it was widely believed in the scientific community that a large primate brain was needed to handle complex problems related to language and understanding and that birds were not intelligent and could only use words by mimicking. However, Alex's accomplishments indicated that birds may be able to reason on a basic level and use words creatively. Alex had reached the emotional level of a 2 year old human at the time of his death, according to Pepperberg.
Alex's use of words, distractions like the water bowl, and indication of wanting to leave, but showing patience, all make one wonder whether there is a limit to evolutionary possibilities.
My own experience with pets, has shown me that if not in terms of intellect, animals at least have quite high levels of emotional intelligence. Try hiding the fact that you are sad from your pet cat, or not apologizing to your dog after shouting at them; their comprehension of emotion is evident.
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