These monkeys keep getting more and more attractive as they get older because their noses never stop growing. These noses that make the males so attractive to the females.
coppied from http://www.themost10.com/interesting-animals-that-you-probably-dont-know-exist/
By Charlesjsharp (Own work, from Sharp Photography, sharpphotography) [CC BY-SA 4.0], via Wikimedia Commons