Even though seeing your pee stained carpet raises your blood pressure through the roof
, from the dogs point of view he was just doing what comes naturally for him, so you should not be mad. Some of the most common complaints that people have about their dogs is excessive barking, chewing items, jumping and going to the bathroom in the house, even though these behaviors might make you very mad, it might be a good sign that your dog is just trying to get along with the family. Another behavior that might be of concern to you is your dogs aggression, this is a big red flag. The only reason a dog should bite is if its been trained to legitimately defend its territory.