Am i wrong?

I was walking back to my apartment and this lady has this tiny dog on a leash. I walk by and this dog lunges at me barking and snarling but thankfully it's on a leash and i could move away. I told her if that thing bites me there will be a lawsuit. This isn't the first time ive had to deal with this dog doing the same thing. First time i said whatever and brushed it off but obviously this little dog is vicious or something and likes to come after people. That's not ok someone should teach that dog manners and how to be around people