I beg to differ with your comment to Troy. My Willow has had 3 baths in FOUR years. Her coat is the clean, soft-textured, and sweet smelling. She does NOT swim in lakes, rivers or streams and is NOT oily in any way. (People have actually asked me how I keep her white markings so white.) My other corgi, Chloe, does need bathed more as her coat does build up an oily feel every few months, though that has been improved by better diet (she is a rescue that we adopted last year). Bathing is necessary. How often depends on the dog and the lifestyle it leads. Bathing does wash out natural coat conditioners, which need to be replaced with a good shampoo/coat conditioner.