I never expected to come across animals so ugly that they leave me at a loss for words, but these monkeys have done it.
This photo was taken at Emei Mountain Park, Sichuan Province, China, home to a Chinese species of macaque. I wondered if perhaps this information from Wikipedia explained why this mother and child are so terrifically unattractive:
Visitors to Mount Emei will likely see dozens of monkeys who can often be viewed taking food from tourists. Local merchants sell nuts for tourists to feed the monkeys. Some monkeys may be seen eating human food such as potato chips and even drinking soda from discarded bottles. While most of the monkeys look healthy, other monkeys appear out of shape from apparently being fed human food that is not native to the monkey's natural habitat.
But the entry also helpfully supplies a photo of another baby:
That little guy looks perfectly healthy.... and perfectly hideous. So apparently they do come by it naturally.
-Wombat (No Relation)
Thanks (I think) to the Telegraph's Pictures of the Day.