The dog is white in seven places, with white hooves, pointed tail, white mouth and white neck. How is the dog?

Generally, dogs have white hair on their tails, so it is unlucky to say that they have lost their tails. However, that was a superstition in the past. For example, some breeds of dogs are born with white tails, such as border collie and four Beijing Ba dogs with white claws. Besides, there are many people who keep these dogs. Is it unlucky to raise them?