didn't accept the big dog's dominance... really.. its called pack drive. aggression to other dogs is either from being attacked before or the dog wants to be pack leader over the other dog.

i too have choked out a dog. same dog twice actually. this is before i learned about pack drive and pack leaders.

about 8 years ago, we adopted a gsd from my old boss. the pup had grown out of control and too strong for them to control as do most high energy large puppies do. so we adopted him at 1 year old and about 110lbs.. we've always had gsd's as i was growing up (my current 2 pups are #8 and 9). anyways, when Max turned 3-3.5, he decided he was big enough to challenge me for leadership and snapped and growled at me. he jumped at my face and snapped so i swept his lower half and went into the same naked choke the kid in the story used. Max continued to growl and was trying to kick and wiggle his way out but continued to try to snap at me so i ended up choking him till he passed out.

2 days later, we took him to my parents house. in the back yard, he jumped me from behind and pushed me down then started growling and snarling again. when he launched to bite at my head again, i clocked him on the side of the head and swept his lower half again. this time, i was pissed beyond belief so i had one of his arms locked in a semi half-nelson choke from the side and was looking to kill him this time. foam coming out of his mouth, he couldn't move nor yelp or make any other noise. my dad had to pull me off.

i thought Max had a medical condition and was turning aggressive on me. other then that i didn't raise Max since a puppy and didn't think i had to establish strong pack leadership with him.

from that day on, all i do is give him a firm down command from anywhere and he immediately lays down. he won't approach any dog even without a leash until he looks at me for permission.

now at 12 yrs old, he's been perfect dog ever since that leadership establishing session...