I was thinking that too. I studied Veterinary medicine for about a year. If a Male mammal didn't have tit's some of his offspring would inherit that gene and some sows would be born titless or with just a few. On a side note, just another strange thing or two. Female Possums have 13 tits and like a barn yard hen they have only one back door. Their babies come right out their gazoo then climb into their moms pouch. Roosters may be called Cocks but nope, they don't have one of those. Although Ducks do have what Roosters don't and some ducks even have bragging rights. Life is interesting.. Google virgin birth Comodo Dragon. Have fun.
