Another factor is grooming. Dogs like terriers as well as long-haired breeds require frequent stripping or brushing. Stripping in fact, removes the loose telogen hairs that would otherwise be shed. Brushing does the same but that does not equate to not shedding. Almost the only dogs that do not shed hair off are the corded breeds, because the shed hair is caught up in the dreadlocks in these dogs. Another factor is activity and swimming.

Owner's can learn to control when and how dog hair is shed, by brushing, toweling, stripping combing bathing grooming or lots of outdoor exercise, though. If you COULD stop shedding or slow it up, you would end up with a dull, dry-looking, bleached out ugly hair coat, as all the hairs would be old and split.