We have a 13 year old male Boston named Bogart, he has been a great companion but his behavior has changed in the last few months. He has started to pee inside which never ever happened since being a puppy. He has been to the vet and all blood work and other tests have come back normal. We know that his eye sight is starting to fail, but his temperament has changed completely in several ways he angers far more easy, wants to drink water continuously and then of course he pees wherever he is, if you raise your voice to him when this happens he gets angry and tends to snap. He has always been a good eater but about six months ago that has changed too, he is fed twice daily a half portion for his size 24-26 lbs.