First, you should decide if you want a male or female. Males and females are similar in many respects but there are marked differences between the sexes that you should be aware of. Males are larger and heavier (24-26 inches at the highest point of the shoulders and 65 to 90 lbs). Females are somewhat smaller and lighter in weight (22-24 inches in height at the top of the shoulders and 50-70 lbs). Secondary sex characteristics should be pronounced for males and females, e.g.