I totally believe it is real. My grandparents had a tortie when I was growing up. They tell so many stories about her! Apparently they left her alone for two days and to show she was mad she made on Grandpa's refrigerator (her main human.) If that's not tortitude, I don't know what is!

On the same thought lines, shaded silver persians are supposed to be the most ethereal of all persians. This is definitely true for Marshmallow.