Changes In Behavior While Aging

As your pet ages, he may have some changes in behavior. He may be undergoing a diminished sense of smell, eyesight, and hearing. Aches and pains or more serious medical conditions like heart and liver disease can also affect his behavior.
Your canine can also undergo a syndrome like Alzheimer. The physical problems that come with aging can give your dog a range of behavior changes from irritability to lack of responsiveness or disorientation.