i know this is nothing to do with deer dogs or tracking but i took my 12yr old springer beating with me yesterday and he seemed to have lost nealry all interest. over the summer he has lost condition in his coat and has kept a substantial amount of wieght on. he seems to be deaf to the whislte and at the end of the last drive he went straight to the end of the covert and just sat there watching the guns. my father who was shooting called him and he jsut sat there and looked at him. he has never been like this and i am quite worried any thoughts on what this could be would be greatly appreciated.