Some pet owners dont mind having their dogs looking like trash. But for your dog, this is simply unacceptable. Dogs are not as fastidious as cats, so you will have to help them in the grooming process. Either take them to a local pet spa or put them in the bath. They wont mind being bathed, their teeth brushed, their ears cleaned, their hair combed, and their nails clipped so long as you trained them for it.