Oh, gosh Marie, you have your hands full with that one! lol
Well, Gucci got like that recently with a dog that she has played well in the past, and I wasn't sure why? I thought maybe she was just being protective of her toys and food (the other dog was trying to play with her things, and Gucci was NOT having it) I was kind of stumped on that one, too. She either LIKES another dog a whole lot and wants to play OR she hates them and growls! There is no inbetween with her, black or white.
I've noticed she does well with certain breeds, Havanese, Maltese, Brittney Spaniels, but heaven forbid a Yorkie or MinPin comes around.
I guess I would let Sissy establish the "second in charge alpha" on her turf and watch closely to make sure there is no aggresion or challenging. I guess dogs build a heirarchy naturally. Maybe Sissy is just mad that she *charged* her and/or challenged her.
I hope you get the beagles behaving properly
I know several people that do not train their dogs, and they are BRATS. You must be a saint, because I probably would've said no! lol
Oh, and Sissy is precious in that picture.