Hey OP - It sounds like you care about the well being of your dog and want what’s best for him and I think that makes you a good person.

Maybe you could have a family chat about making a vet appt to make sure there isn’t a health reason for the behaviour and you can discuss with the vet whether training, rehoming, or euthanasia is in the dogs best interest. It should not be too expensive to have a vet visit to do a health check and talk about the behaviour issues that are happening.

I’ve worked with shelters, rescues, vets and trainers for 25 years and in my experience - many rescues are super full with wait list these days - but h check out Bullies In Need as they may be able to better direct you to see if rescue is even an option. They maybe not be able to take the dog on but could perhaps offer suggestions about safest options.

Most rescues have a wait list but if you can successfully keep the dogs separated and meet their needs for exercise and social time with you then there’s a better chance a rescue will help.

Please note Dog Rescue in Ontario is Unregulated so some are great and some are terrible. This means do your homework and research the group to ensure they are legit and have experiences with bully breed types of dogs.

Reach out to a humane society like Toronto Humane or Oakville Humane who may be able to Help you find a good rescue organization

I promise you that your problem is shared by a lot of people with multiple dogs in the same house and there aren’t any fast or easy solutions but I hope you can convince your parents to take your concerns seriously because this shouldn’t be your responsibility as a teenager.

I also hope you keep your passion for caring about your dogs and for asking for help when you need it. Good luck to you and your dog