Why are capuchin monkeys kidnapping howler monkey babies in Panama? We investigate this bizarre case of primate abduction with researchers working with the Smithsonian to get to the bottom of this ...

Scientists have detected microplastics in the digestive systems of red howler monkeys living in protected areas in the Brazilian Amazon, marking the first evidence of plastic ingestion by a ...

A capybara and a howler monkey have struck up an adorable friendship while sharing a habitat at the Denver Zoo Baya and Rebecca — the only two females in their enclosure — were seen snuggling as the ...