The term COVERING FOR A DOG can be solved by the seven-letter word MUSTARD. Mustard is a condiment made from the seeds of a mustard plant, which is a member of the cruciferous family. It is commonly used as a spread on sandwiches and hamburgers, but it can also be used as a covering for a dog. Mustard is known to have anti-inflammatory properties, which can help soothe skin irritations and provide relief from itching.