Unravelling the mystery of the 'world's ugliest animal': Scientists reveal why male proboscis monkeys have large, phallic noses - and say they're crucial for mating success

It's safe to say that proboscis monkeys are some of the strangest looking creatures in the animal kingdom. While female monkeys have pointy noses, the males have large, rather phallic noses – earning them the title of the'world's ugliest animals'. Now, a study has finally got to the bottom of this unusual facial feature. Scientists from the Australian National University say that their large noses are more than just an eye sore. Instead, they offer several major benefits – especially when it comes to attracting a female partner.