Don’t do anything you’ll regret. I know it seems like life is horrible right now, but it will get better. You won’t lose you friend if they care about you. Don’t give up and stay positive. Try and convince your parents selling your dog isn’t the best idea, that the dog helps you, and makes you happy. Most importantly talk with someone you feel safe talking to, this can help you feel better and let someone know how your feeling. I hope you have a great night or day, and if you need anymore advice, remember people are here for you!