[Yorkieprobs]

Hello! Hope you all are having better weather than we are. Where's Spring hiding?

I've posted here previously, and thankfully the situation with my pup is much improved. However, my mothers dog, henceforth known as Cujo, started to attack my cats and I had enough and got my critters the heck out of harms way. Unfortunately, on the day we were moving (what luck), Cujo got ahold of one of my cats. His wound was so serious the vet, who knows Cujo all too well, bluntly told me to get my cats out of there because Cujo will eventually kill one of them. Unfortunately, Mum didn't take the vets or my own concerns seriously. In her words, I was being "dramatic" and she was angry at the vet for "trying to scare me." Sigh. The important thing is my boys are safe and happy.

We left a year ago and in that time she has added three puppies to her household. The first is a Yorkie male and honestly, Cujo is pretty ok with him. At least, she only attacks him rarely now. Possibly, because he's a Yorkie too. But, she's the same around my dog and he's a Chihuahua. The previous Chi mum adopted she had to rehome a few months later because they were going to kill one another. It could be that he's a smart boy and gives Cujo a wide berth. But, it's probably because she now has better faces to chew on. The other pups are a 6 month male MinPin and his 8 week old sister. She's his biological sister, just different litters. They both walk on eggshells around Cujo, but it doesn't matter. She will attack them for minding their own business on the other side of the room.

The older MinPin has been to the vet many times for infected wounds. He has bite marks in various stages of healing everytime I see him. The baby MinPin's first introduction into her new home and mum was being attacked by Cujo. What really scares me is how Cujo goes for the head, neck, and belly. The vet told my mother that Cujo doesn't want other dogs around and that she will seriously maim or injure them if she can. She just got angry and said that she didn't like the way the vet talked down to her. But, my aunt was also there and said that the vet was just being honest and didn't yell or talk down to anyone. Honestly, with what I've seen the vet sounds reasonable. I dearly love my mother, but she either doesn't or doesn't want to take Cujo's aggressions seriously.

On top of her attacks on animals, Cujo has bitten almost everyone she has contact with. She's bit my mothers husband in the face. Bit my mother's hand and arms. Bit the vet. Bit me. Bit my aunts. Bit the neighbor. Nearly bit my little cousins and the neighbor girl. Her groomer is one of the few people she hasn't bitten, but I'm not sure if I believe that. She probably muzzles and is just afraid to tell mum. Otherwise she's a Cujo-whisperer and needs to share her secrets. lol

My vet said Cujo attacking the cats is her prey drive and she definitely has a strong one. The neighbor that she bit is a dog trainer and works with rescues. She said a dog that attacks without warning has a few screws loose. I've been around dogs (little dogs, big dogs, the so-called "aggressive" breeds) my whole life and have never seen one go from 0-10 like Cujo does. Usually there's a tell or some kind of escalation. She just goes from being sweet and calm to killer. Unfortunately, she was purchased at a sale from a byb, so we have no information about parents or sibling temperament. My mother's vet thinks its territorial and jealousy. She might not want other animals around. I don't know what to think. When I took care of her as a puppy, she was so good. She learned potty training and commands quickly, wanted to please, had a very calm, sweet temperament, and would even sleep with my cats. And for as much as I call her Cujo, I really care about her and can't imagine, whatever's going on, that she enjoys it. And while its not my household or my problem, I love animals and my mum and don't want either hurt.

Alright, before this gets any longer than it already is, does anyone have any suggestions, tips, ideas, training, anything, no matter how blunt, to help an extremely aggressive dog? I greatly appreciate any and all responses and anyone taking the time to read this post. Thank you!

Tldr; mothers very aggressive Yorkie is putting holes in her other dogs and sometimes, people too. No warning. Sweet and calm, then Cujo. Anyway to stop her from potentially killing the other dogs or getting my mum sued by a neighbor?