I know, I know. He's not a cat. But occasionally when an amazing animal or animal story catches my attention I have to post it. Alex was part of a thirty year study with animal psychologist Irene Pepperberg. He died in 2007. At the time of his passing, his intelligence level was reported to be on par with a human five year old and his emotional level on par with a human two year old.
If you have a moment, take a look at the video. Its worth your while.