The term 'DOG'S TREAT' can be solved by the four-letter word 'BONE'. A dog's treat is a type of food or snack that is specifically designed for dogs. It is usually made from ingredients that are safe for dogs to eat and can provide them with essential nutrients. Bones are a popular type of dog treat, as they provide dogs with a source of calcium and other minerals, as well as being a fun and tasty snack.