A vigorous dog may or may not have high energy, but everything they do, they do with vigor: they strain on the leash (until you train them not to), try to plow through obstacles, and even eats and drinks with great big gulps. These dynamos need lots of training to learn good manners, and may not be the best fit for a home with young kids or someone who’s elderly or frail. A low-vigor dog, on the other hand, has a more subdued approach to life.
