Watching Ceaser Milan 'The Dog Whisperer' has became my new hobby lol.Learned alot from him and how dogs behave in a pack.Even a dog as a pet see's the family as a pack so you and your gf need to be calm assertive pack leaders and be consistant with everything,doing everything the same.The magic word 'shhhttt' is all i say nowadays to control both them,no name calling,no use of word 'no' and a quick touch if they get too nosey of another dog and at same time 'shhhttt'

You would need to watch it a few times to understand where im coming from lol but to control her food obsession all i done was anytime she went near his food i would say 'shhhttt' and if she kept going nearer i would say the same with a firm touch to her hind leg or next to her head if head was closer.It's hard work to keep on top of it to begin with but after a few attempts you get it perfect and no need for touch unless they are highly strunge in a situation

Bullet every time i see your sig pic i cant help but smile

Just to add greed is a control thing which in long term is anger against other dog.She is the 1 in control as you have had to use a gaurd to control her and she see's that as just an obstacle to get over to feed her habbit.She is obviously a pack leader when in puppy pack with mum so will act the same until you show her your the leader