Rising testosterone levels produce the increased confidence that accrues to social status as well as increased assertiveness.

Emerging mere inches from a group member, the majestic silverback gorilla appeared from the foliage. The animal was so close that the boy seated nearest had to move back to clear the gorilla's path.

For those who were either hiding under a rock or paying tribute to fallen soldiers over the Memorial Day weekend, here’s the story: A mother turned her back on her four-year-old son for a moment ...

Suddenly, the giant silverback - known ... I've got a family here, so back off'," says Djenguet. "But if you stand your ground, it stops him moving forward." The gorilla reached out and grabbed ...

He came and saw how small and weak [the child was] and turned his back ... Many Silverback Mountain Gorillas do see eye contact as a challenge. A male gorilla will keep his eyes open to any ...

The large Silverback also made a lasting impression on Sir David Attenborough, who met Titus, then 5, as the young orphaned gorilla jumped on his back. He said: "He was a charming little animal.

For those who’ve had enough of the top job, returning to the faculty can be energizing — and disorienting. “I’ve heard a lot ...

(A male gorilla is called a silverback when, at about age 11 to 13, the hair turns gray to silver across his back.) "Nonsense!" I replied. "Old silverbacks never travel alone. They always stick to ...

A silverback chomps on handfuls of leaves ... Despite a quarter century of regional conflict, the mountain gorilla population is bouncing back from the brink of extinction—where it was when ...

The new arrivals include a silverback gorilla, a new troop of four patas monkeys, three addax antelope and several new bird and animal species. Babtunde is an 18-year-old male from the Bronx Zoo.

Today is World Gorilla Day, and we’re remembering our fondness for the impressive primate.

Felix Byamukama pleaded guilty to illegally entering a protected area and killing a gorilla. Byamukama had ... mountain gorillas left in existence The silverback, believed to be around 25-years ...