Hi, I had a friend who had a lovely pit bull, they were inseparable and extremely devoted. She went through the steps to qualify him as a service dog and this allowed her to get around normal rules such as housing, stores, etc. She had cancer and this dog kept her going until the very end. He was as the Indians say her "Animal Familiar", a shared soul in this life. Good luck and stay positive. Information above was the right place to start. I still smile when I think of the two of them, though she is gone now. What a special couple! Best wishes TT