Well by DixieGal's definition, I guess I'm not human.
However I believe that zoologists define us as Homo sapiens or more commonly as humans, so by that definition, I'm a human.
You might as well ask is a tree a tree? or is a dog a dog? The term human is just a name we have more-or-less agreed to call ourselves. A more interesting question might be, "If you took a living human brain and encased it in a robot body with appropriate life support for the brain, would that entity be a human?"
And no a chimp is not a human. Neither is a dolphin, gorilla, dog, horse, etc., etc. They are classified differently.
I think that under the US legal system, a human can be considered as a non-person, and a legal entity, of some sorts, can be considered a person. However I don't think that addresses the purpose of the question.
Another question, "If you think I'm not a human, does that make me a non-human?" No. As Popeye said, "I yam what I yam." Your opinion doesn't change what I am, although it might change what my legal status is.
So whether I'm a human, I yam what I yam.
