In 2011, while looking for animals in southern Brazil's Mato Grosso (map), Julio Dalponte noticed an unusual monkey with a reddish-orange tail, "like a blaze," he says. His interest piqued, the ...

Titi monkeys housed at the California National Primate Research Center form lifelong, monogamous pair bonds. A recent study investigated jealousy in pair-bonded primate species, offering insight into ...

The female titi monkey was 33 years old, which is almost three times the life expectancy. Delasol had many geriatric health issues over the past eight years, according to the zoo. As her health began ...

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These coppery titi monkeys have a red beards similar to those sported by the newly discovered Milton’s titi monkey. The new species can be further identified by a light gray stripe across their ...

Deep in the Amazon rainforest, a new species of fluff-covered monkey had been hiding in plain sight, disguised as similar species that we already knew about. The newly named Plecturocebus parecis was ...

Conservationists at Chester Zoo are celebrating the birth of a rare coppery titi monkey - the first of its kind to be born there in its 94-year history. Zookeepers spotted the baby clinging to the ...