Some background. We have a small female, un neutered (or however you say it) cockapoo who is great. Shes calm, good with people, and obedient for the most part. We've had her for about six years now. When we originally got her, it was my mother's idea. The dog, let's call her Megatron, was extremely disobedient the first year. Constant shitting in the house, ate our food, harassed our cat of 10 years. My mother talked all the time about how pointless and hopeless this dog was, how she would give it away the next month if things didnt change. It was just a puppy doing puppy things. She didn't seem to understand that training dogs takes a while. 

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Our other, much more well behaved dog, beloved by my mother as almost another child, died about three years ago. She was understandably heartbroken as we all were. A great dog. He was about medium sized, so she not soon after started looking for another medium sized dog. 

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Fast forward to two years ago and she went to the local pet store for some dog food for Megatron. She comes back with this large puppy, about the size of a medium sized dog. Completely rash decision. I am not aware of the hurricane that is to come so am initially excited and supportive. 

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Megatron is not spayed/neutered, keep in mind, so she is extremely territorial of this new dog. She immediately does not jive with it and it sucks. He wants to play, Megatron wants to fight. The house is constantly a canine battlefield. 

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The puppy is extremely difficult, added challenge of him already being the size of a medium sized dog. He breaks out of his cart, tears up carpet, eats food from the kitchen, etc. 

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My mom and stepdad are leaving for somewhere, so they ask me to watch the house while they're gone and make sure that the puppy and Megatron get along. Two problems: 

1. I have a historic phobia of dogs, and dog conflict makes me very anxious. She was around to witness this development in my early years 

2. I am an extremely anxious person. I have at this point already made clear to her that I was going through a period of immense mental difficulty, as I developed a severe panic disorder out of no where. 

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To absolutely no ones surprise, shit hit the fan. The puppy immediately began causing problems. Chewing things up, getting aggressive with Megatron, scaring the cat. I called my girlfriend over to help calm me down. I was playing computer games in the living room to distract me. Dog ate my only mouse. My girlfriend leaves to get me a new mouse because shes amazing and I was worried about not having one that night as using my laptop is part of my relaxation routine. When she comes back, dog eats her new vans she just bought. When she tries to get them back, dog bites her. 

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The entire time I'm having an extreme panic attack, Megatron is very uncomfortable, cat is hiding, my girlfriends pissed. My mom never took responsibility for anything that the puppy destroyed. She never got me a new mouse, my sister new shoes. When I told her about it, her response was "That's what happens when you get a puppy". I firmly believe that it isnt what happens because it's not my puppy, it was hers. She knew the difficulty of this dog, she knew my anxiety would skyrocket. 

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The worst part is, the puppy was too much for her too. She put it up for adoption in a shelter, again. Poor dog now has to wait twice for it's owner, because my mom didn't have the responsibility for it. 

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Now shes telling me, tonight, she has her eyes on this new female puppy, three weeks old. I start off like I don't believe shes serious, but my younger sister of course feeds into this mess, because she of course never had to take care of the previous dog, or will this new one likely. 

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I tell her "I'm not babysitting this one" which she responds "I never asked you to". I said "You did the last puppy and that went horribly" and she says "Well you live here, you might have to.".

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Kind of bunked if you ask me. I am a college student with a job that only gets me 16 hours a week avg. I like the hours because I'm still very much contending with my anxiety problem. It hasn't gotten better and it hasn't been easy to work around. I'm making some progress in some areas, but I'm also experiencing new psychotic symptoms lately such as slight hallucinations and paranoia. Shes never been good at supporting my anxiety, so I've gone this journey alone save my father and girlfriend. Therapy has been expensive and hard to find. 

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I think it's necessary to mention that because I'd be much more willing to help with the dog if I hadn't already so much reason to worry. It's her house which I am lucky enough to live in rent free, so long as I stay in school. It's her life, she can get a puppy if she wants. I won't even try to stop her, that's just not right of me. But I feel like I have the right to refuse to help take care of it, and express my general concern as to why its a horrible idea. 

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TL;DR

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Mom historically bad with puppies. First puppy we barely kept and is now a great, small dog. Mom expected me to participate for this second, large puppy which went to shit, destroyed me and my girlfriends things, set off my anxiety disorder to all hell, and she refused to take responsibility for it. Got put up for adoption. Now she wants another new puppy which we all know will not jive with our first dog, and she also expects me to take responsibility for it. 