Well today I had my first bossy corgi incident. I was out walking with baxter, letting him romp around. He stumbled upon a pile of dried horse poo in the backyard. Not sure why exactly it was there...but I digress. So he grabbed a piece, I told him no, removed it from his mouth, and picked him up. He immediately started showing attitude, growled and nipped me in the face, it wasn't a hard bite but a nip all the same. I tapped his nose lightly and gave him a firm No. I brought him back into the house and he immediately went over and lay down in the living room. I think he knew he had gotten in trouble. He usually listens well, and I've never had any problems before, he has growled before when petting him when he was in play mode which I wasn't sure whether to take as playing or slight aggression. He is definitely a strong willed puppy, he isn't afraid of anything. I've been working with him though and usually he minds well and is well behaved. I know he will require much more training but I dont really understand these little sudden outbursts of his when he is playful and excited. Does anyone have any advice? I am not sure what to take as puppy play and what to take as aggressive bossiness.