When it comes to sex, you can’t have it all. Male howler monkeys are famed for their deep, powerful roars, which are among the loudest noises made by terrestrial animals, and may help them compete ...

Costa RIca is home to roughly 5 percent of the planet's biodiversity, and golf courses that fit with their natural surrounds.

Granddaughter Kyndra had a blast celebrating her 7th birthday at the Denver Zoo. The hour was getting late. We were exhausted. The roar of the sad lion and laugh of the hyena faded into the distance ...

If evolution had a sense of humor – its favorite punchline might be the howler monkeys. These tree-top vocalists are nature’s rock stars: dramatic, loud and convinced that volume equals value. They ...

SALT LAKE CITY, Oct. 22, 2015 - Across the animal kingdom, males hoot and holler to attract females and ward off competing suitors. Now, a new study finds that male howler monkeys with deeper calls ...

Brown howler monkeys (Alouatta guariba), endemic to the Atlantic Forest in Brazil and Argentina, became one of the 25 most threatened primate species following a yellow fever outbreak in late 2016. In ...