https://www.facebook.com/iamrobertmccormick/videos/4045151479141765Commencing when dogs are 6 weeks aged, a series of 4 doses of combined vaccines against distemper, hepatitis, parainfluenza, and parvovirus are offered two to four weeks aside.Twiddling with our pups is sweet for us. Seriously, science says so! To make the most of shelling out time