In the animal world it’s less about size and more about readiness. Yep, there exists a species of monkey called the Proboscis Monkey which goes about it’s daily business with a Rock Hard Red Boner. Pretty incredible really. We’d spotted many of the Proboscis females but it wasn’t until the last day that we encountered a male. And believe it or not, each male chills with a harem of up to 7 females.
But back to the penis; It’s always erect and sweating. Yes, sweating! Not because he’s constantly having intercourse but because scientists believe this allows them to shed excess salt they accumulate from their salty mangrove habitat. Pretty cool hey?