Where does the DailyMail come up with this stuff? It’s more hilarious than the National Inquirer.
Primates including humans only have enough energy to grow big testes OR an impressive beard or mane, study claims
Male primates face stiff competition as they they try and attract potential mates
Researchers studied testicle size and looks of 100 species - including humans
They believe primates only have the energy to develop one or the other
Range in size from a peppercorn to a tennis ball's diameter depending on animal
The Aussies really don’t have anything better to conduct research on?
More @ Why males with beards and long hair have the smallest testicles | Daily Mail Online