Talk about a jungle joyride -- two gorillas went completely bananas for each other, tossing modesty into the bushes, and getting busy in broad daylight... giving stunned onlookers a surprise mating ...

Note, however, that single-male mating does predominate among apes, characterizing all except chimpanzees. This is hence the most likely condition in the common ancestor of apes and humans. Strangely, ...