I have a question for breeders who vaccinate their puppies at home. Do you give the full vaccine? Or do you reduce the amount given due to the size of the puppy? Does a St. Bernard pup get the same dose as a chihuahua? I had a breeder tell me that she gives the full vaccine but my vet told me that he gives only a quarter of the vaccine to new pups. My puppy was seven weeks old when vaccinated by the vet and only given a quarter vaccine (Novibac, Puppy-DPv). He is due to receive his next vaccine next Friday. Is a quarter effective for a pup who weighed less than a pound? Is he going to be safe? If not what should I do? Start over? Thank you!