There are many reasons why dogs exhibit unwanted behaviours quite suddenly and dramatically or slowly over time. While some behavioural issues can be corrected through proper diagnosing and treatment of specific medical conditions (such as urinary tract infections or pain associated with arthritis), many unwanted behaviours are not due to a medical condition and require the expertise of a professional dog counsellor or trainer. Your veterinarian will work with you and your dog to rule out any underlying medical conditions that can cause unwanted behaviours and guide you in finding the right type of dog counselling.