Anyone who kills a fawn or finds one dead should check the mouth to see if it has an underbite (the lower incisors being anywhere forward of the dental pad rather than contacting the dental pad) or an overbite (short lower jaw). On male fawns check to see if they have a normal length, bilateral scrotum and a normal length penis sheath (on WTD newborn males, the penis sheath should be at least 1 1/8 inches long and on adult males 2 inches or more). If you find a fawn or an adult harvested deer with any of these birth defects, you should report it to your Game and Fish Department. Some states have a very high prevalence of underbite and male reproductive malformations and it would be good to find out what is causing these conditions. Quite a few human newborns have the same birth defects and heart defects are considered the number one birth defect in human newborns. Heart defects were the third most common birth defect on wild animals beginning in 1995. That was when the other birth defects mentioned above began on ruminant newborns, other wildlife newborns and human newborns.