A little backstory: I moved away from home to another city when I was 17, then later moved back to my family's home when I was 19. I only stay here for part of the year as my work requires me to travel a lot. However I do still pay rent to my parents to cover increased bills since I'm living here. I don't hate dogs, but personally I wouldn't have one myself as I don't want to be responsible for a dog. The vet appointments, training classes, walking 3 times a day. Realistically I wouldn't be able to maintain this day to day. I like my sleep, having time to myself, and I don't have the energy to take the dog for a walk three times a day every single day. 8 months ago, my Mum, Dad, and sister (22F) all agreed to get a family dog that they would take care of together. At no point in this did they ask me about whether or not I'd be involved with taking care of this dog as they are very much aware of my stance on them. We've now had this dog for around 8 months and he is the most energetic puppy I've ever witnessed. So far the majority of the work has fallen onto my mum. Most of the walking, getting up early, training etc. Every now and then I'll be asked to take him for a walk or just keep an eye on him which I'll do, but these are things that only take half an hour out of my day. The problem is that my parents are set to go on vacation for 2 weeks. In that time my parents are expecting my sister and I to look after the dog. But as their vacation approaches my Mum is hinting that she's expecting me to get up in the morning to deal with the dog. This means getting up at 6am to walk the dog and staying with him until I go to work, or the entire day if I'm off. My sister will be responsible for him for the days that I'm at work (she works from home most days), then we'll trade off nights where we look after him. This may not sound like a lot, but he is still a puppy and we've not gotten to the stage of being able to leave him alone without him destroying things or playing roughly with the cats etc. I can't do anything when I'm taking care of him either. As he is too energetic and jumps on top of me and all my stuff. Given how my sister has completely backslided and let our mum deal with most of the labour, I'm fully expecting to either have to deal with this dog alone for the next two weeks, or the dog won't be adequately taken care of. I've already argued with my sister on previous occasions about who is looking after this dog when our parents have been away because she wanted me to look after him whilst she was busy for the night. This argument escalated and our relationship has not been the same since. I don't think I'd be in the wrong to tell my parents that they shouldn't expect me to look after the dog for two weeks, as I never agreed that I'd look after this dog in any capacity. But I'm wondering if I'd be the asshole for still living in the same house and not wanting anything to do with the dog even though I am capable.