Cyril Ruoso / Eastern Chimpanzee (Pan troglodytes schweinfurthii) , Frodo the dominant male and hunter, eating a Red River Hog (Potamochoerus porcus) piglet with two females begging, Gombe National Park, Tanzania

Cyril Ruoso / Eastern Chimpanzee (Pan troglodytes schweinfurthii) eating leaves, Gombe National Park, Tanzania

Cyril Ruoso / Black-legged Kittiwake (Rissa tridactyla) female on nest with young, Latrabjarg Cliff, West Fjords, Iceland

Cyril Ruoso / Greylag Goose (Anser anser) gosling, Austria

Cyril Ruoso / Chacraraju Mountain summit at 6112 meters, Cordillera Blanca Mountain Range, Andes, Peru

Cyril Ruoso / Blue-and-black Tanager (Tangara vassorii) at 4500 meters, Cordillera Blanca Mountain Range, Andes, Peru

Cyril Ruoso / Rainforest interior, Peru

Cyril Ruoso / Banana (Musa sp) leaf detail with water drops, Peru

Cyril Ruoso / South American Squirrel Monkey (Saimiri sciureus) portrait, Peru

Cyril Ruoso / Sumatran Orangutan (Pongo abelii) mother and young, Gunung Leuser National Park, Sumatra, Indonesia

Cyril Ruoso / Asian Elephant (Elephas maximus) pair playing, Way Kambas National Park, Sumatra, Indonesia

Cyril Ruoso / Asian Elephant (Elephas maximus), Way Kambas National Park, Sumatra, Indonesia

Cyril Ruoso / Cape Warthog (Phacochoerus aethiopicus) tusks, hunting trophies that get checked in customs in regard to CITES and local law, France

Cyril Ruoso / Verreaux's Sifaka (Propithecus verreauxi) trio huddling, vulnerable, Berenty Private Reserve, Madagascar

Cyril Ruoso / Ring-tailed Lemur (Lemur catta) mother with baby clinging to her back, vulnerable, Berenty Private Reserve, Madagascar

Cyril Ruoso / Ring-tailed Lemur (Lemur catta) eating Opuntia (Opuntia sp) cactus, introduced from South America, it became a very important food subsistance for Lemurs, cattle and even humans, vulnerable, Berenty P...

Cyril Ruoso / Common Sunflower (Helianthus annuus) field, Bourgogne, France

Cyril Ruoso / Common Sunflower (Helianthus annuus) field, Bourgogne, France

Cyril Ruoso / Ring-tailed Lemur (Lemur catta) resting on a tree branch, vulnerable, Berenty Private Reserve, Madagascar

Cyril Ruoso / Ring-tailed Lemur (Lemur catta) group huddles for warmth as they sleep, vulnerable, Berenty Private Reserve, Madagascar

Cyril Ruoso / Verreaux's Sifaka (Propithecus verreauxi) jumping across open ground, vulnerable, Berenty Private Reserve, Madagascar

Cyril Ruoso / Ring-tailed Lemur (Lemur catta) male warming himself in the sun, vulnerable, Madagascar

Cyril Ruoso / Ring-tailed Lemur (Lemur catta) portrait, vulnerable, Berenty Private Reserve, Madagascar

Cyril Ruoso / Ring-tailed Lemur (Lemur catta) baby riding on mother's back, vulnerable, Berenty Private Reserve, Madagascar

Cyril Ruoso / Ring-tailed Lemur (Lemur catta) troop walking down dirt road, vulnerable, Berenty Private Reserve, Madagascar

Cyril Ruoso / Ring-tailed Lemur (Lemur catta) eating a flower, vulnerable, Berenty Private Reserve, Madagascar

Cyril Ruoso / Ring-tailed Lemur (Lemur catta) calling, vulnerable, Berenty Private Reserve, Madagascar

Cyril Ruoso / Verreaux's Sifaka (Propithecus verreauxi) portrait, vulnerable, Berenty Private Reserve, Madagascar

Cyril Ruoso / Ring-tailed Lemur (Lemur catta) two adults and a baby, vulnerable, Berenty Private Reserve, Madagascar

Cyril Ruoso / Red Deer (Cervus elaphus) stag bugling during autumn rutting season, Denmark

Cyril Ruoso / Chimpanzee (Pan troglodytes) baby playing with keeper, Pandrillus Drill Sanctuary, Nigeria

Cyril Ruoso / Chimpanzee (Pan troglodytes) adults and young, Pandrillus Drill Sanctuary, Nigeria

Cyril Ruoso / Drill (Mandrillus leucophaeus) alpha male calling, Pandrillus Drill Sanctuary, Cross River State, Nigeria

Cyril Ruoso / Drill (Mandrillus leucophaeus) adult male, Pandrillus Drill Sanctuary, Nigeria

Cyril Ruoso / Drill (Mandrillus leucophaeus) adult female grooming alpha male, Pandrillus Drill Sanctuary, Nigeria

Cyril Ruoso / Drill (Mandrillus leucophaeus) adult male close-up of face, Pandrillus Drill Sanctuary, Nigeria

Cyril Ruoso / Drill (Mandrillus leucophaeus) adult male appeasement face, Pandrillus Drill Sanctuary, Nigeria

Cyril Ruoso / Tree trunks logged by German company and certificated as legal wood from the Congo forest, destination Europe, Democratic Republic of the Congo

Cyril Ruoso / Bonobo (Pan paniscus), bath time for orphan infants with their adoptive mother, Sanctuary Lola Ya Bonobo Chimpanzee, Democratic Republic of the Congo

Cyril Ruoso / Bonobo (Pan paniscus) female with newborn, Sanctuary Lola Ya Bonobo Chimpanzee, Democratic Republic of the Congo

Cyril Ruoso / Bonobo (Pan paniscus) pair of orphans hugging, Sanctuary Lola ya Bonobo, Democratic Republic of the Congo

Cyril Ruoso / Terraced rice paddy fields, Ubud area, Bali, Indonesia

Cyril Ruoso / Snow Leopard (Uncia uncia) pair sitting together, native to Asia and Russia

Cyril Ruoso / Barn Swallow (Hirundo rustica) migratory flock of forty birds perching on telephone wire, Poitou, France

Cyril Ruoso / Barn Swallow (Hirundo rustica) migratory flock perching on telephone wires along road, Poitou, France

Cyril Ruoso / Greater Flamingo (Phoenicopterus ruber) pair, principally native to the Caribbean region and Galapagos Islands, Ecuador

Cyril Ruoso / Raggiana Bird-of-paradise (Paradisaea raggiana) portrait, native to Papua New Guinea

Cyril Ruoso / Komodo Dragon (Varanus komodoensis) drooling, the lizard's saliva is high in bacteria and bites quickly become infected, Rinca Island, Komodo National Park, Indonesia