As you smartly mention, examining overall activity levels is of primary importance. (avsab.org)
While it may reduce the dogs overall activity level, that can be taken care of with an extra walk or a little more time spent romping in the yard. (professorshouse.com)
How much protein you should be consuming is entirely determined by your own factors such as weight, age, gender, height and your overall activity levels. (hannahandfitness.com)