Far too many dogs are obese. Many people don't think of putting a coat on their small or short-haired dog when they walk it on a cold winter day, even if the dog is shivering. Conversely, many dogs cook to death in cars on hot summer days. Some dogs don't receive proper vaccinations or have stool samples regularly tested for internal parasites. Other dogs are never groomed.
Responsible owners make it a priority to know and provide proper care.
They obey all laws pertaining to dog owners. These laws simply codify basic good manners. They take the time to teach their dogs basic manners and socialize their dogs so that they will not be uncomfortable or unruly around different kinds of people in everyday situations. Every pleasant, well-behaved dog and every responsible, considerate dog owner is an ambassador for all dog owners. You demonstrate a desire to be a responsible dog owner by participating in obedience or agility classes, and I applaud all of my students for that.