I am so touched that you took Buck into your family! He must be a true blessing...anything that has the will to live so strong has a wonderful gift!
There is only one thing -- please make sure that Buck can't get out of the fence where the bunnies get into it. I know he loves to chase them but I wouldn't want something to happen to Buck...he has had so much trouble in his short life -- he should live trouble free for many years.