That depends on the breed of dog. If your dog is medium to long hair it is recommended that your dog be groomed every 4 to 8 weeks. If your dog is short hair it must be bathed no less than once every month and no more that once a fortnight. For proper upkeep of a long hair coat, to prevent shaving off when matted, a dog should have a tidy up between grooms monthly. As an owner it is your responsibility for all of these important things to be looked after- The nails must be clipped every 2 months, the coat must be washed no more than fortnightly, the anal glands must be expressed every 2-4 months and the ears must be cleaned regulary. If you have a long coated breed you must look after it by combing as often as possible. Shave offs once or twice a year are not fair on your pet and make your pet look and feel different, increasing the risk of injury to the skin. Double coated breeds: Should have a full professional brushout 4 times a year and should have a bath and blowdry to remove excess hair every 4 weeks.