What are your thoughts on the 5 minute per month rule for exercising a puppy? I personally think that it is too much of a blanket statement. If you have a giant breed, then I believe it is very sensible to adhere to something near this rule. However if you have a medium sized dog then once past 3 months I believe that you could increase the times reasonable quickly without too much problem, as long as you are careful about ball games and steps. If on the other hand you have a small breed, particularly terriers who are quite compact and hardy little dogs, then i think the rule is way out, as it is supposed to go on up to 18 months and a lot of small dogs are almost mature at 9 months.