My cats are very different. Gorgeous is bright, alert, and very fond of biting me at any given moment. Grey (also known as Grigio), on the other hand is timid. She often has a vacant expression on her dilute tortoiseshell face, mouth agape as she wheezes from her street-acquired respiratory ailment. Simply put, she seems simple. Sorry, Grigio. Armed with the knowledge that cats, can, in fact be dumb, I cannot claim that I was terribly surprised by the results of a feline-related study that were…