Sadie's colors and markings show that she has a lot of English Springer Spaniel in her; but, a lot depends on the size and structure her ancestors. Mixes of small dogs should result in smaller dogs, and mixes of larger dogs should result in larger offspring. It should be remembered that all "full-bred" dogs were once mixes of other breeds.
Until the late 1800's, all spaniels were considered to be part of one large group. The larger land spaniels became known as "springers" because they were used to flush or "spring" game from its hiding places. The American Spaniel Club undertook the job of separating the larger Springers from the Cockers around the end of the 19th century. The English kennel club recognized the larger Springer Spaniel around 1900.
The Springer Spaniel is a versatile hunting dog that can range far & fast; and still be used to retrieve downed game. Its cheerful, playful temperament also makes it a popular family dog. It is a high-energy dog that needs plenty of exercise and regular grooming. They are usually alert and trusting toward their families.
The Springer will be a happier dog if it is allowed to share the family's home. It will also be a Lot easier to maintain the coat. The hunting lines usually have less coat and will be easier for the average family to maintain.
The females weigh about 40 pounds and stand about 20" tall. The males are taller and heavier at 50 lb and 21". They have a soft, dense undercoat with a long wavy topcoat of black or brown with white.