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 ...

Violet, a little black Howler Monkey, has been hand-raised in the zoo's nursery.She broke her finger shortly after she was born at the end of April. Zoo employees have taken over for Violet's mom, ...

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, ...