 Cria are generally between 15 and 19 pounds, and are standing 30 to 90 minutes after birth.After a female gives birth, she is generally receptive to breeding again after about two weeks.Crias may be weaned through human intervention at about six months old and 60 pounds, but many breeders prefer to allow the female to decide when to wean her offspring; they can be weaned earlier or later depending on their size and emotional maturity.