🧐 A dog is a domesticated mammal known for its loyalty, intelligence, and close bond with humans. Descended from wolves thousands of years ago, dogs have been selectively bred into hundreds of different breeds, each with its own size, appearance, and temperament. They have highly developed senses, especially smell and hearing, which make them excellent companions for work such as herding, hunting, search and rescue, and assisting people with disabilities. Dogs communicate through body language,