All dogs require regular brushing in order to keep their coats healthy and untangled.
If you can imagine how your head might feel if you didn't brush your own hair for a few days, you'll have a small idea of how important regular brushing is for your companion animals too. For some breeds, daily brushing is recommended. Long haired breeds and double coated breeds obviously tangle and mat more that a slick coated dog, and because of this, they need to have their coats properly cared for, especially if you want to keep the length the breed is known for. A matted coat causes numerous problems for your dog. First, it's terribly uncomfortable because as the hair mats tighter and tighter, it pulls on the surrounding skin.