The keeper we talked to says no diagram prepares you for the task at hand.
#5. We Are Constantly Masturbating Animals
I’ve sat through entire lectures discussing the proper way to give a crocodile a hand job (answer: very carefully), and I was once assigned to a team responsible for jerking off cranes. It’s not that we’re just really enthusiastic about animal wangs; for rarer crocs, artificial insemination makes more sense than traditional breeding, because there’s less chance of them murdering each other. Zoo animals kill intended mates all the time.