Originally, Germany was possessive of its skilled all-purpose gundog. Some of the earliest weimaraners, prior to being sent to America for breeding, were sterilized in order for America not to popularize their special breed. But starting in the late 19th century the breed became increasingly common throughout Europe and the United States. Although slower than many other gundogs, such as Pointers, the Weimaraner is thorough and this made it a welcome addition to the sportsman's household. The breed's happy, lively temperament has endeared it to families. With the rise in popularity, some changes have been made to the breed. Both in Britain and America (where the breed remains popular) breeders have taken care to breed to a standard.
Weimaraners have an excessive amount of energy that requires a good outlet. Hunting is a good option. Weimaraners are well-rounded hunting dogs that excel at hunting, tracking, pointing, and retrieving both on land and in the water. The Weimaraner lives to hunt for its owner as it is a very people-oriented breed. They have a very strong desire to work and live with its owner making the breed a good choice for the novice hunter. It requires a gentle touch when training to hunt and it often learns best from a seasoned hunting dog.
Data refer : http://en.wikipedia.org/wiki/Weimaraner