I work with an animal rescue,,and often have dogs over to help with socialization. I have fostered, and adopted a foster, and I have one dog , male neutered Rottie boxer mix, who never fails to try to show his dominance with new visiting dogs. I have been working with a small ( 30 lbs) italian greyhound mix, male , neutered, submissive. He is great with all dogs,,as are my other 2 permanent resident female great Pyrenese mixes( except with each other on occasion). I always try to be viligent with my male, he attacked my recently adopted foster female GP mix couple times when she was first in the house( she is very submissive) but no injury, just a lot of noise on his part. I mildly scolded him. Now they get along ok( she still doesn't trust him tho). Saturday night I,had some company over for dinner, which I do lot, casual, no stress, and had this little guy to get him socialized with men( his biggest fear), along with one of my guests dogs, male, neutered Shepard mix, who Pancho ( my male) adores, tho this guy pays zero attention to him or any other dogs, just his master, when he is over. Well, my guests can't help themselves when it comes to sneaking tidbits to the dogs from the table( a big no no in my book) especially when they knew I was trying to socialize the little visiting rescue doggie. He and everyone was doing well, my back was turned for a second( hostess) and I heard the commotion, which came from under the table. attack noise from my guy and squeals from little rescue. It ended quickly, I told Pancho, the perp, to go to his bed and stay, and checked out little guy for injuries, there were none. Everyone went about their business, feeling sorry for Pancho( I didn't see it happen, but 5 dogs under the table getting fed scraps is a recipe for disaster, in any house, if you ask me)Should I have even scolded Pancho? His bed is right in the main room, so not like he was removed from the party. IF he ever goes after another dog, it's rare, but he never causes injury, and it is usually from having his personal space invaded too much. He is 100 lbs, btw. Looks like a boxer with the build of a rottie.