my 1 yr old doberman doesnt want to eat his dry dogfood, he has started to drink alot more water and had his first accident in his kennel. he acts normal does everything like usual accept eat. he would eat all his food in a few minutes before with no problem. Also, he has been having diahria & gas real bad lately. Even to the point where he is having accidents in the house. I dont know whats wrong. Any thoughts or comments?