Cocker Spaniel refers to two closely related breeds of sporting dogs: the American Cocker Spaniel and the English Cocker Spaniel. Both breeds were originally bred as hunting dogs to flush and retrieve game birds, with the name "cocker" derived from their use in hunting the woodcock bird. They are characterized by their long, silky coats, floppy ears, and affectionate, lively personalities. The American Cocker Spaniel is smaller, with a rounder head and shorter back, while the English Cocker Spaniel is slightly larger with a narrower head. Both make excellent companions and are popular family dogs known for their gentle temperament and energy for play and exercise. They come in various coat colors and require regular grooming due to their coat's length and texture.