In the US, Cocker Spaniel means the American Cocker, the smallest dog in the AKC Sporting Group. Its spaniel ancestors flushed woodcock for English hunters, and the American version became a smaller dog with a domed head, large dark eyes and a long, silky coat in black, solid colors or parti-colors. Most weigh 20 to 30 pounds.
Many Cockers are gentle, cheerful and eager to be near their people, and they respond best to soft, patient training. They adapt well to different homes but not to skimped upkeep: the coat needs regular brushing and professional trims, the long ears need weekly checks, and eye and ear problems are common in the breed. Dogs vary, so a Cocker's own behavior matters more than the breed label.