That answers why they took the mother dog to the shelter! Yikes! It’s great you had a broom near by at that time. This dog is so close to that. Your story is a reminder that this dog is going to do that.I once had a young dog (2 year old) that came from a litter of pups belonging to family members of my oldest grandchild. For the grandchild, this pup came to live with me because the Mother dog and remaining pups were going to the shelter. The older that pup became, the meaner he got. I had to crate him when company was here, while he barked, bit the crate door, and growled the whole time. He once tried to attack my eldest grandchild's 4 year old half brother through the bars of a heavy duty wire crate. The response of the children's Mom was, "Oh, he acts just like Sassy (the dogs Mom) did." Ding, ding, alarm bells were ringing.
One unfortunate evening, this dog (Storm) was being food aggressive towards my personal protection dog who was separated and being fed inside her own crate. Her name was Shade and she was my 9 year old Wolf Hybrid and constant companion. Shade went into a rage, and more than likely would have tried her level best to mangle Storm if given the opportunity. I took Storm by the collar to take him into another room behind a closed door, and he turned on me. Hackles raised, teeth bared, growling, barking, and trying to back me down. Shade went berserk, Storm ramped up.
The end result was having no choice other than beating Storm off with a broom until I backed him into the corner while he bit that broom numerous times and repeatedly lunged at me. The leashes were then hanging within arms reach and I made a loop by threading the fastener through the handle and tossed it successfully over his head. Storm was taken outside by using the broom handle for distance control to keep him from attacking me, and tied firmly to the basketball goal while I came back inside for a firearm.
It was the only time my heart didn't break from taking the life of an any type of animal.
His history of aggression really sounds creepily like Storm.@Emrcornerranch if it would help please consider letting family members read about Storm. Can't deny I was the "bad guy" for a little while, though that mattered not so much to me. I tolerated that demon dog longer than I should have, because they were going to get him when they found another place to live, etc. Even after the dog tried to go after their child! Told them, he couldn't be trusted, replied he would make a good watch dog.
I am very experienced in training dogs, taught obedience levels 1-3, intermediate and level 1 agility for 23 years combined. Currently both my dogs have CGC, level 2 obedience, and level 1 agility, certificates for both. And 1 (one) has level 3 obedience, guardian, search and rescue, plus therapy dog certificates. Storm was a well trained CGC and level 2 obedience certified dog and was accomplished at intermediate agility. He was full of aggression, dominance, and could care less whether or not his behavior was pleasing to his master. And he required his own personal space and lots of redirection.
When he got to be about 1 1/2 years old, he steadily became untrustworthy and I had to constantly monitor his body language, keep him from personal contact with people and other unfamiliar dogs. Then it got to the point, he couldn't be trusted around my dog Shade, or any other person, even family. The evening he turned on me, he would not back down, be submissive, obey any commands.... he only wanted a piece of me and Shade. A person should not have to tolerate an untrustworthy, aggressive dog and I understand there can be family dynamics weighing in the mix. With all my heart, I hope it doesn't escalate any more with the dog you've been describing. Though the reality is, it will.