Many of the dog owners that I meet in my work ask me questions about their dog's behavior issues. Although I am a professional dog walker and pet sitter, I am not a certified trainer nor am I a dog behaviorist. For various reasons, dogs may develop behaviors that their owners find annoying, upsetting, or downright dangerous. Although there is a lot of information available in dog behavior books, and online forums, I strongly recommend contacting a certified dog trainer or behaviorist for a consultation. Each dog is an individual and his or her needs should be addressed as an individual. Sometimes dog behavior issues are health -oriented and a trip to the veterinarian should be the first place to start. In any case, your dog is part of your family and deserves to get the appropriate attention and treatment to live a happy and healthy life with you. A good place to find a professional trainer is the Association of Pet Dog Trainers.