Primates

A chimp steals a glance at a photographer in Uganda's Kibale National Park.

Chimps Caught in First Known Nighttime Crop Raids

“The nightlife of chimpanzees has been neglected,” say researchers who filmed wild animals using a fallen tree as a bridge into protected cornfields

A wolf yawning in the snow near Hesse, Germany.

Yawning Spreads Like a Plague in Wolves

Evidence of contagious yawning in chimps, dogs and now wolves suggests that the behavior is linked to a mammalian sense of empathy

Borneo Has Lost 30 Percent of Its Forest in the Past 40 Years

Borneo's tropical forests have fallen at twice the rate as the rest of the world's felled rainforests

A chimpanzee (Pan troglodytes) mother resting with her children in western Uganda.

Ebola Vaccine For Chimps Could Help Save Wild Populations

A trial of a chimp vaccine highlights debates over vaccinating wild populations and using chimps in medical research

Mom's ample body serves as this baby's bed for now, but soon she'll grow up to build sleeping nests of her own.

Chimpanzees Are Extremely Picky About Where They Sleep

The primates painstakingly rebuild their nest from scratch every night—a pre-bed ritual reminiscent of the "Princess and the Pea"

Spider Monkeys Are the Only Other Primate Species That Segregates by Sex

Spider monkey females are basically living together in a feminist commune to escape the aggressive, greedy males

We Burn Just Half the Calories Other Mammals Do

Our slow metabolism helps explain why it takes us so long to grow up—and why we live such long lives

Silky sifakas have long eked out an existence in rugged, high-altitude forests. Now the growing number of people nearby pose a threat to the furtive primate.

Saving the Silky Sifaka

In Madagascar, an American researcher races to protect one of the world's rarest mammals, a white lemur known as the silky sifaka

Calaya gave birth to the Zoo's first male western lowland gorilla in nine years.

Good News/Bad News: The Primate Chapter

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Suspect Arrested in Gorilla Killings

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UPDATE: State of Emergency

The latest on the endangered mountain gorillas in war-ravaged Congo

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Animal Insight

Recent studies illustrate which traits humans and apes have in common—and which they don't

Guerrillas in Their Midst

Face to face with Congo's imperiled mountain gorillas

Two days after the killings, villagers poured in to help rangers carry bodies back to Bukima and then on to Rumangabo for burial. Here, volunteers are taking the pregnant and badly burned Mburanumwe out of the forest.

State of Emergency

The slaughter of four endangered mountain gorillas in war-ravaged Congo sparks conservationist action

Claudine Andre, founder of Lola Ya Bonobo (Bonobo Paradise) sanctuary, rescues about ten of the endangered animals per year.

Bonobo Paradise

"Bonobo Paradise" is an 86-acre sanctuary set in verdant hills 20 miles south of Kinshasa, Democratic Republic of the Congo

Sue Savage-Rumbaugh (with Kanzi in 2003) says her bonobos can communicate with her and each other using more than 348 symbols.

Speaking Bonobo

Bonobos have an impressive vocabulary, especially when it comes to snacks

Bonobos have a playful, gentle manner that is often reminiscent of human beings at their best. Our common primate ancestor lived six million years ago.

The Smart and Swinging Bonobo

Civil war has threatened the existence of wild bonobos, while new research on the hypersexual primates challenges their peace-loving reputation

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Wild Things: Life As We Know It

Human behavior, primate intelligence, meal planning, tree-dwelling orchids and detangling history

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Wild Things: Life As We Know It

From chimpanzee communication to paper wasps and humans fleeing Vesuvius

A verreaux's sifaka lemur can jump 30 feet

For the Love of Lemurs

To her delight, social worker-turned-scientist Patricia Wright has found the mischievous Madagascar primates to be astonishingly complex

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