Ok this is really weird but ... Every single person that has ever said something about Bentley has called him a "she" ... Ohh she's so pretty, oh how old is she?

it doesnt bother me really and I usually just follow along and dont correct them. But I wonder why?
His belt is black and I havent dress him up yet (Florida weather! ) and he doesnt wear bows either....
Is it because he's tiny? Lol