Unlike most mammals, mature male orangutans exhibit different facial characteristics: some develop large 'cheek pads' on their faces (as shown above); other males do not. A team of researchers studied the difference in reproductive success between cheek-padded males and males without cheek pads. They found that those with cheek pads are significantly more successful in fathering offspring.
At 29 years old, this is the world's oldest wombat. In the wild, wombats usually only live to five years old. And with no female partners to speak of, 'Patrick' is a virgin.
