Muslims should not keep dogs as pets. Muhammed made some exceptions for dogs that serve a useful purpose. Any black dog of any breed should be killed. - Tom
From Muslim #3814-- Ibn Mughaffal reported: Allah's messenger ordered the killing of dogs and then said, "what is the trouble with them (the people of Medina? How dogs are nuisances to them (the citizens of Medina)? He then permitted keeping of dogs for hunting and (the protection of) herds. ...[and for] for the protection of cultivated land.