I too was struck by the statement that cat's brains are similar to human brains. I think a lot of people assume that because they have small heads/brains, they are stupid. On the contrary, I find cats to be really pretty sharp (and smarter than many humans I know). This applies to dogs too. I think human beings are a bit imperialistic when it comes to animals. We dominate, so we must be smarter, or more apt. However, when you hear stories of dogs rescueing their owners who are having a heart attack, or cats surviving a trip in a plane without proper air, or food and water for days, elephants mourning a death, you have to think. They don't give up as easy as human beings and can be capable of complexities that humans only associate with themselves.