A dog brush is a grooming tool designed to remove loose hair, dirt, and tangles from a dog's coat. It comes in various types, including slicker brushes, bristle brushes, and combs, each suited for different coat types and lengths. Regular brushing helps maintain a dog's coat health, reduces shedding, and can prevent matting. Using a dog brush can also promote bonding between the pet and owner. It is recommended to brush dogs at least once a week, but more frequent grooming may be necessary for long-haired breeds. Proper brushing techniques can enhance the overall appearance and comfort of the dog.