The Zoo has three new baby monkeys: twins born to emperor tamarins Lettie and Roger, and a new Bolvian grey titi monkey born to Juniper and Biscuit.

Coppery titi monkeys are socially and genetically monogamous—one of only seven completely monogamous mammals known. How and why do they remain faithful?

Delasol died after her geriatric health issues worsened in recent weeks, leading zoo officials to euthanize her. The average lifespan of a female Bolivian gray titi monkey is around 11 years, the ...

You probably haven’t heard of Vieira’s titi, a monkey found only in the Brazilian Amazon. Until recently, even researchers knew so little about it that they couldn’t determine its ...

Delasol, a Bolivian gray titi monkey has died at the Lincoln Park Zoo. ABC7 Chicago is now streaming 24/7. Click here to watch The female titi monkey was 33 years old, which is almost three times ...

Denver Zoo said a 31-year-old coppery titi monkey named Cinnamon has died. She was photographed by Joel Sartore for his Photo Ark Project.

The monkey, a Groves' Titi, listed as "critically endangered" by the International Union for Conservation of Nature (IUCN), had ventured far from its fast-shrinking home on a hill in a small patch ...

The first time Brazilian biologist Fernanda Abra saw a Groves’ titi monkey, one of the most 25 endangered primates in the world, it was positioned right next to a road.

According to The Associated Press, Cabrera told authorities he was carrying the tiny monkeys in a suitcase -- which, titi experts tell me, is not their natural habitat -- and only put them in his ...

The Wildlife Conservation Network strategy of building “bonds, commitment, credibility, and trust” with donors is saving a number of endangered species ...

The first time Brazilian biologist Fernanda Abra saw a Groves’ titi monkey, one of the most 25 endangered primates in the world, it was positioned right next to a road.