Thirteen million years ago, a group of medium-sized monkeys known for guarding their territory among the treetops with fearsome "howls" started doing something new. These monkeys, among the oldest ...

Add Yahoo as a preferred source to see more of our stories on Google. PROVIDENCE, R.I. (WPRI) — The Roger Williams Park Zoo is mourning the loss of one of its beloved howler monkeys. Ramone passed ...

The baby's on display in the Zoo's South America's Pantanal exhibit.

The “big truck, small man” phenomenon is also seen in the animal kingdom. The loudest howler monkeys were found to have the smallest packages. Hyoid bone size, which is responsible for vocalizations, ...

Howler monkeys are relatively small primates known for their incredibly loud, low-frequency roars that sound as if they come from a much larger creature. This is useful in the animal kingdom because ...

Scientists spotted surprising evidence of what they describe as monkey kidnappings. The capuchin monkeys were seen carrying ...

True friendship can be found in the most surprising of places, including a zoo habitat. A howler monkey and a capybara have formed a dear friendship while sharing an enclosure at the Denver Zoo ...

VESTAL, N.Y. (WBNG) -- For July, the Ross Park Zoo chose to highlight its howler monkeys, Diego and Carlita. These two have spent most of their lives together at the Ross Park Zoo and have grown quite ...

Robin Williams was known for making his audiences howl. That belly-laughing spirit is behind Williams' namesake at the San Francisco Zoo, which named a Howler monkey after the comedian in June. "He's ...

Talk about learning the ropes! This little rescue is taking his first steps. Parismino is a howler monkey who doesn't have a mom, so he's learning how to walk and climb using this special "jungle gym" ...

Venezuelan Red Howler (Alouatta seniculus). They inhabit rainforests and mountain forests of Central and South America. The loudest monkey. Morning roar of a red howler. Close-up.© ...

Zoos often group the two species because of their similar habitats and dispositions Erik Bowker/Denver Zoo Conservation Alliance A capybara and a howler monkey have struck up an adorable friendship ...