I was just thinking more on the topic of little dogs and aggression and it hit me that I never really mentioned something that I think is key.
Even if the owner treats the small dog being aggressive as something serious, most people don't. They'll tease and harass the dog because it's 'funny' and they know the dog can't/isn't likely to seriously hurt them. Even if the owner tries to be proactive about not putting their dog in that situation, it can happen when it's not expected or even family will do it. It doesn't take much for a situation like that to make a dog worse or confirm it's suspicions that strangers = bad/scary.
I know it's something that's happened a few times with Lolita. The most recent time was when my step-sister's boyfriend's friend (we shall call him C) came over last year. While we usually don't bring Lolita out while there are visitors around, he happened to be there when it was time for her to go potty. I brought her down and stopped to say something to one of my stepsister's, still holding Lolita in my arm. She started barking because people and C apparently thought he could impress me with his bravado (he had a stalker level crush on me and couldn't take no for an answer) by putting his hands as close to Lolita's face as he could and then pulling them away before she could bite (it was in a sort of jabbing motion so it probably looked to Lolita like he was about to hit her). He only did this once and I immediately pulled her away and told him off in language very inappropriate for these forums. I let her out and then immediately took her back to my mom's room before C had the chance to try anything again. I also never brought her out again whenever C was at the house but, if we let her out right after C had been visiting, she would smell him in the house. She would obviously be stressed, stiff and you had to be careful how you approached her and make sure she knew who you were (poor eyesight, little hearing) or she'd nip. That was ONE time that he did that and for 5 seconds top and she didn't forget his smell.
















