What does living with the mountain gorillas do to a man?

About 650 mountain gorillas are left in the world, according to scientists.

The national park is known as a haven for the mountain gorilla.

Despite their recent population growth, the mountain gorilla remains threatened.

From his own father to a huge, hairy mountain gorilla.

The mountain gorilla is not held in captivity at all.

"It was a young male mountain gorilla," said a voice from the darkness.

She was crucial to the survival of the mountain gorilla.

So what is the future for the mountain gorilla?

Mountain gorillas are an endangered species, with an estimated total population of about 650 individuals.