Aahh, I know that feeling.

Just beacause Angus is a rottie (a pretty good sized one at that) people expect him to be mean. They are so surprised that he is not the vicious dog they expected....but a big, big baby who loves people and loves to play ball with them
All my dogs are stereotyped. But the worse is with Huney. People look at her and go "OH MY, it's a chow!" and head off the other way Whatever, their loss