All ya gotta do to be one is "hook up" with a person having the opposite sex accoutrements you do and get preggers!
Now I ask you what more important job is there in the world? Why is society so a**backwards? All animals can make babies if they partner up right. No big deal. Right? Boy it should be the BIGGEST deal. Screwy homo saps. You need a license to sell booze and I suppose to sell weed. Sigh. But making babies is free of charge, free of requirements, free of oversight, free of safety features. Any animal in heat is a potential parent.