The World’s 7 Ugliest Animals

Published January 5, 2014
Updated November 9, 2023

Ugliest Animals: The Proboscis Monkey

The proboscis monkey is an endangered mammal that lives on the island of Borneo. While most people find their large, bulbous noses laughably ugly, the animals make good use of their fleshy schnozes in courtship. Male proboscis monkeys utilize their bulbous snouts to attract females while scaring off potential males. These monkeys subsist on nuts, leaves and unripe fruit (the sugars in ripe fruit can make them sick!).

Ugliest Animals Proboscis Monkey

Source: Live Science

Proboscis monkeys travel in groups, called harems, and prefer to stay in the trees, only coming to land to eat occasionally. These monkeys love water, and are best known for comically jumping from tree limbs to belly flop into lakes and streams. Since proboscis monkeys only live on Borneo, their numbers have rapidly declined in the past few years as the island’s landscapes are transformed by human development.

Ugliest Animals Proboscis Monkey

Source: Wikipedia

Ugliest Animals Proboscis Monkey Climbing

Source: Panoramio


If you enjoyed this post on the world’s ugliest animals, be sure to see our other articles on the world’s most bizarre animals, deadly animals, and interesting facts about the world! Finally, check out some of humanity’s most truly weird pets.

author
Savannah Cox
author
Savannah Cox holds a Master's in International Affairs from The New School as well as a PhD from the University of California, Berkeley, and now serves as an Assistant Professor at the University of Sheffield. Her work as a writer has also appeared on DNAinfo.
editor
John Kuroski
editor
John Kuroski is the editorial director of All That's Interesting. He graduated from New York University with a degree in history, earning a place in the Phi Alpha Theta honor society for history students. An editor at All That's Interesting since 2015, his areas of interest include modern history and true crime.
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Cox, Savannah. "The World’s 7 Ugliest Animals." AllThatsInteresting.com, January 5, 2014, https://allthatsinteresting.com/ugliest-animals. Accessed May 2, 2024.