I have a dog: I bit someone today and don't want to keep it anymore. What should I do?

It bites. You can educate him and teach him. If he makes some mistakes, you don't want him? Maybe she is only a part of your life, but you are all to him. You can live well without him. You have to eat and laugh, but it may not eat or drink. After all, it's a life. If you don't want to be responsible, don't bring it up at the beginning.