My name is Felix, in Latin it is Felicius, Felix means happy and joyfull. I think my parents gave me that name because they wanted a happy son and probably didn't think of the names meaning :)
I do not know if it is just white people that are obese, it could be that the area you live in it also lives many obese white people.
I don't now why it would be good to scare you'r dog but I'm guessing you want to scare the dog when the dog does something that is not allowed, then you can scream at it with a high voice and make angry gestures. But indeed this is a weird question.
As many said, they exist but maybe not as in Hollywood, if I may answer my self on this question the answer is yes. Trust me, I may be young... Haha.. But I got experience.