Mogens Trolle

Wild mandrill alpha male showing off his fangs in the jungle of Gabon.

Proboscis Monkey female from the mangrove of Borneo. In most monkeys, the males disperse when they reach sexual maturity and the females stay in the troop they grew up in. But female proboscis monkeys, especially young ones, may change groups several times and even join a bachelor group.

A Tibetan Macaque mother keeping her young warm on a cold winter day in the mountains of the Labahe Nature Reserve in Sichuan, China, a place famous for Red Panda. With a weight that may exceed 18 kg it is one of the largest macaque species. Only the females get the red face.

THE LOOK / One of the many details I love about that powerful face of the drill are those expressive amber eyes. From the Pandrillus Afi Mountain field site, Cross River, Nigeria.

THE YAWN / Wild mandrill alpha male flashing his canine teeth to let the world know who is the king of the jungle. Mandrill males get the longest canines of all primates, measuring up to 5 cm. Mandrills are mainly fruit eaters, so the main purpose of these weapons is threats and fights. Gabon.

Today seems appropriate to share a portrait of a chimpanzee.

Black crested macaque, famous for its winning smile. It uses this facial expression, among others, to invite another troop member to play, groom or mate. And just to show friendly intentions in general.

From Tangkoko Nature Reserve on Sulawesi, the hotspot for this threatened species.

Red eyeliner, blue eyeshadow, a heart-shaped coiffure. The pig-tailed macaque males go all in to look their best. Khao Yai National Park, Thailand.

Eye contact with black crested macaque in the monsoon forest of Sulawesi.

MEDITATION / Golden snub-nosed monkey from the Qinling Mountains, Shaanxi, China.

Gelada male from the high mountains of Ethiopia.

Chimpanzee male with a scar on his lip from a colobus hunt. Kibale National Park, Uganda.

Black-and-white snubnosed monkey from Yunnan, China eating its favourite - or at least dominant - food, lichens. A male with big pink lips.

Wild blue-eyed black lemur from north-western Madagascar.

Japanese macaque mother cradling her young in the Jigokudani hot spring in the winter mountains of central Japan.

MOHAWK / Black crested macaque alpha male from the monsoon forest of Sulawesi, Indonesia.

Golden snub-nosed monkey from the winter landscape of the Qinling Mountains of China. Thick fur and a habit a hugging each other at night allows it to survive night temperatures down to -30 degrees Celsius.

Close-up portraits of the drill (Mandrillus leucophaeus), the lesser-known cousin of the mandrill. The black mask of the big males is almost orangutan-like. Pandrillus Afi Mountain, Cross River, Nigeria.

A female Bornean orangutan from the wild.

Female Japanese macaque, aka snow monkey, relaxing in a hot spa on a cold winter day, looking lazily over her shoulder to send me a glance with her expressive amber eyes. The face of the females gets redder during the mating season. Jigokudani, Japan.

Eye contact with a proboscis monkey youngster from the mangrove of Borneo.

Mandrill youngster from the wild. Gabon.

Wild Golden Langur from Assam, India.

Gelada youngster, Ethiopia.

Drill male making flirtation face, making eye contact with a female. Afi Mountains Pandrillus site, Cross River, Nigeria.

Snow monkey cannot believe its own eyes. Japan.

Black crested macaque alpha male from Tangkoko Nature Reserve, Sulawesi.

Gelada male from the Simian Mountains of Ethiopia. The larger a harem a male has, the darker and more intensely red his chest mark gets.

Lion-tailed macaque female from the jungle of the Western Ghats mountains in southern India.

Snow monkey mother and youngster in snowy weather in the winter mountains of Japan.