Fiona Rogers / Eastern Chimpanzee (Pan troglodytes schweinfurthii) twenty year old male, named Titan, Gombe National Park, Tanzania

Fiona Rogers / Eastern Chimpanzee (Pan troglodytes schweinfurthii) seven year old juvenile male, named Siri, feeding on vines, Gombe National Park, Tanzania

Fiona Rogers / Eastern Chimpanzee (Pan troglodytes schweinfurthii) twenty-five year old female, named Tanga, Gombe National Park, Tanzania

Fiona Rogers / Eastern Chimpanzee (Pan troglodytes schweinfurthii) four year old infant male, named Gizmo, Gombe National Park, Tanzania

Fiona Rogers / Eastern Chimpanzee (Pan troglodytes schweinfurthii) eighteen year old male, named Sampson, Gombe National Park, Tanzania

Fiona Rogers / Eastern Chimpanzee (Pan troglodytes schweinfurthii) four year old infant male, named Gizmo, Gombe National Park, Tanzania

Fiona Rogers / Eastern chimpanzee (Pan troglodytes schweinfurtheii) juvenile female 'Fadhila' aged 5 years and her brother 'Fifty' aged 3 years playing together.Gombe National Park, Tanzania.

Fiona Rogers / Eastern chimpanzee (Pan troglodytes schweinfurtheii) infant male 'Fifty' aged 3 years portrait.Gombe National Park, Tanzania.

Fiona Rogers / Hanuman Langur (Semnopithecus entellus) group on temple, Virupaksha Temple, Hampi, Karnataka, India

Fiona Rogers / Eastern Chimpanzee (Pan troglodytes schweinfurthii) five year old juvenile female, named Fadhila, playing with her three year old brother, named Fifty, Gombe National Park, Tanzania

Fiona Rogers / Eastern Chimpanzee (Pan troglodytes schweinfurthii) mother, twenty-three years old, holding less than one day old newborn, Gombe National Park, Tanzania

Fiona Rogers / Mountain gorilla (Gorilla gorilla beringei) female portrait, member of 'Humba' group . Virunga National Park, Democratic Republic of Congo, March.

Fiona Rogers / Mountain gorilla (Gorilla gorilla beringei) female portrait , part of the 'Munyanga' group. Virunga National Park, Democratic Republic of Congo, March.

Fiona Rogers / Mountain gorilla (Gorilla gorilla beringei) silverback male feet, member of 'Humba' group. Virunga National Park, Democratic Republic of Congo, March.

Fiona Rogers / Mountain gorilla (Gorilla gorilla beringei) infant portrait, member of 'Humba' group. Virunga National Park, Democratic Republic of Congo, March.

Fiona Rogers / Mountain gorilla (Gorilla gorilla beringei) female portrait, member of 'Humba' group . Virunga National Park, Democratic Republic of Congo, March.

Fiona Rogers / Eastern chimpanzee (Pan troglodytes schweinfurtheii) alpha male 'Ferdinand' aged 20 years, females Nuru' aged 22 years and 'Nasa' aged 24 years calling. Gombe National Park, Tanzania. June 2012.

Fiona Rogers / Southern plains grey langur / Hanuman langur (Semnopithecus dussumieri) female portrait. Jodhpur, Rajasthan, India. March.

Fiona Rogers / Southern plains grey langur / Hanuman langur (Semnopithecus dussumieri) infant aged a few weeks. Jodhpur, Rajasthan, India. March.

Fiona Rogers / Southern plains grey langur / Hanuman langur (Semnopithecus dussumieri) infant aged a few weeks . Jodhpur, Rajasthan, India. March.

Fiona Rogers / Southern plains grey langur / Hanuman langur (Semnopithecus dussumieri) infant aged a few days being held by its mother . Jodhpur, Rajasthan, India. March.

Fiona Rogers / Southern plains grey langur / Hanuman langur (Semnopithecus dussumieri) female grooming a domestic dog. Jodhpur, Rajasthan, India. March.

Fiona Rogers / Southern Plains Gray Langur (Semnopithecus dussumieri) newborn with mother, Jodhpur, Rajasthan, India

Fiona Rogers / Eastern chimpanzee (Pan troglodytes schweinfurtheii) infant male 'Gizmo' aged 2 years lying on the forest floor. Gombe National Park, Tanzania.

Fiona Rogers / Eastern chimpanzee (Pan troglodytes schweinfurtheii) female 'Gremlin' aged 40 years holding female baby aged 2, her granddaughter. Gombe National Park, Tanzania. Gremlin took the new born baby from he...

Fiona Rogers / Eastern chimpanzee (Pan troglodytes schweinfurtheii) female 'Gremlin' aged 40 years calling while holding her baby granddaughter aged 2 months and her own infant son aged 2 years. Gombe National Park,...

Fiona Rogers / Eastern chimpanzee (Pan troglodytes schweinfurtheii) infant male 'Gizmo' aged 2 years, portrait. Gombe National Park, Tanzania.

Fiona Rogers / Eastern chimpanzee (Pan troglodytes schweinfurtheii) infant male 'Google' aged 2 years, portrait. Gombe National Park, Tanzania.

Fiona Rogers / Dusky leaf monkey (Trachypithecus obscurus) baby on a branch . Khao Sam Roi Yot National Park, Thailand. March 2015.

Fiona Rogers / Dusky leaf monkey (Trachypithecus obscurus) juvenile portrait . Khao Sam Roi Yot National Park, Thailand. March 2015.

Fiona Rogers / Tana mangabey (Cercocebus galeritus) female grooming a juvenile. Tana River Forest, South eastern Kenya.

Fiona Rogers / Tana mangabey (Cercocebus galeritus) adult and juvenile sitting - portrait. Tana River Forest, South eastern Kenya.

Fiona Rogers / Tana mangabey (Cercocebus galeritus) babies sitting together - portrait. Tana River Forest, South eastern Kenya.

Fiona Rogers / Red-tail Monkey (Cercopithecus ascanius) in tree, Kakamega Forest Reserve, Kenya

Fiona Rogers / Crested Mangabey (Cercocebus galeritus) mother and five month old young, Tana River Primate Reserve, Kenya

Fiona Rogers / Eastern chimpanzee (Pan troglodytes schweinfurtheii) male 'Freud' aged 40 years head portrait. Gombe National Park, Tanzania.

Fiona Rogers / Silvered Leaf Monkey (Trachypithecus cristatus) mother with five month old baby, Bako National Park, Sarawak, Borneo, Malaysia

Fiona Rogers / Japanese Macaque (Macaca fuscata), Jigokudani Monkey Park, Japan

Fiona Rogers / Japanese Macaque (Macaca fuscata) pair grooming in a geothermal spring, Jigokudani Monkey Park, Japan

Fiona Rogers / Japanese Macaque (Macaca fuscata) baby in a geothermal spring, Jigokudani Monkey Park, Japan

Fiona Rogers / Japanese Macaque (Macaca fuscata) female holding her baby, Jigokudani Monkey Park, Japan

Fiona Rogers / Japanese Macaque (Macaca fuscata) female being groomed, Jigokudani Monkey Park, Japan

Fiona Rogers / Japanese Macaque (Macaca fuscata) baby sucking its toe in a geothermal spring, Jigokudani Monkey Park, Japan

Fiona Rogers / Japanese Macaque (Macaca fuscata) female cuddling her baby, Jigokudani Monkey Park, Japan

Fiona Rogers / Sumatran orangutan (Pongo abelii) female 'Sandra' aged 22 years portrait. Gunung Leuser National Park, Sumatra, Indonesia. Apr 2012. Rehabilitated and released (or descended from those which were rele...

Fiona Rogers / Sumatran orangutan (Pongo abelii) female 'Pesec' aged 28 years portrait. Gunung Leuser National Park, Sumatra, Indonesia. Apr 2012. Rehabilitated and released (or descended from those which were relea...

Fiona Rogers / Sumatran orangutan (Pongo abelii) mature male 'Halik' aged 26 years lying down - portrait. Gunung Leuser National Park, Sumatra, Indonesia. Apr 2012. Rehabilitated and released (or descended from thos...

Fiona Rogers / Lion-tailed macaque (Macaca silenus) female portrait. Anamalai Tiger Reserve, Western Ghats, Tamil Nadu, India. Apr 2013.

Fiona Rogers / Lion-tailed macaque (Macaca silenus) male portrait. Anamalai Tiger Reserve, Western Ghats, Tamil Nadu, India.

Fiona Rogers / Sumatran Orangutan (Pongo abelii) twenty-four year old female, named Ratna, playing with her female baby, named Global, Gunung Leuser National Park, Sumatra, Indonesia

Fiona Rogers / Sumatran Orangutan (Pongo abelii) twenty-six year old male, named Halik, biting lip, Gunung Leuser National Park, Sumatra, Indonesia

Fiona Rogers / Sumatran Orangutan (Pongo abelii) twenty-six year old male, named Halik, Gunung Leuser National Park, Sumatra, Indonesia

Fiona Rogers / Celebes / Black crested macaque (Macaca nigra) sub-adult male head portrait, Tangkoko National Park, Sulawesi, Indonesia.

Fiona Rogers / Celebes / Black crested macaque (Macaca nigra) mature male head and shoulders portrait, Tangkoko National Park, Sulawesi, Indonesia.

Fiona Rogers / Celebes / Black crested macaque (Macaca nigra) sub-adult male head portrait, Tangkoko National Park, Sulawesi, Indonesia.

Fiona Rogers / Celebes / Black crested macaque (Macaca nigra) baby less than 1 month old in mothers arms, Tangkoko National Park, Sulawesi, Indonesia.

Fiona Rogers / Celebes / Black crested macaque (Macaca nigra) female head and shoulders standing portrait, Tangkoko National Park, Sulawesi, Indonesia.

Fiona Rogers / Celebes / Black crested macaque (Macaca nigra) two individuals greeting, Tangkoko National Park, Sulawesi, Indonesia.

Fiona Rogers / Celebes / Black crested macaque (Macaca nigra) female with suckling infant aged 9-12 months, Tangkoko National Park, Sulawesi, Indonesia.

Fiona Rogers / Western chimpazee (Pan troglodytes verus) female 'Fanle' aged 13 years with suckling infant male 'Flanle' aged 3 years, Bossou Forest, Mont Nimba, Guinea. January 2011.

Fiona Rogers / Western lowland gorilla (Gorilla gorilla gorilla) infant 'Sopo' aged 18 months riding on his mother 'Mopambi's' back, Bai Hokou, Dzanga Sangha Special Dense Forest Reserve, Central African Republic. D...

Fiona Rogers / Western lowland gorilla (Gorilla gorilla gorilla) dominant male silverback 'Makumba' aged 32 years head and shoulders portrait, Bai Hokou, Dzanga Sangha Special Dense Forest Reserve, Central African R...

Fiona Rogers / Western lowland gorilla (Gorilla gorilla gorilla) juvenile male 'Mobangi' aged 5 years head and shoulders portrait, Bai Hokou, Dzanga Sangha Special Dense Forest Reserve, Central African Republic. Dec...

Fiona Rogers / Western lowland gorilla (Gorilla gorilla gorilla) juvenile male 'Tembo' aged 4 years crossing a river bi-pedally, Bai Hokou, Dzanga Sangha Special Dense Forest Reserve, Central African Republic. Decem...

Fiona Rogers / Western lowland gorilla (Gorilla gorilla gorilla) female 'Malui' carrying her stillborn infant in her arms, Bai Hokou, Dzanga Sangha Special Dense Forest Reserve, Central African Republic. December 20...

Fiona Rogers / Western lowland gorilla (Gorilla gorilla gorilla) juvenile male 'Mobangi' aged 5 years standing with sub-adult male 'Kunga' aged 13 years in Bai Hokou, Dzanga Sangha Special Dense Forest Reserve, Cent...

Fiona Rogers / Western lowland gorilla (Gorilla gorilla gorilla) infant 'Sopo' aged 18 months head and shoulders portrait, Bai Hokou, Dzanga Sangha Special Dense Forest Reserve, Central African Republic. December 20...

Fiona Rogers / Bornean Orangutan (Pongo pygmaeus wurmbii)female 'Unyuk' and her daughter 'Ursula' aged 4 years. Camp Leakey, Tanjung Puting National Park, Central Kalimantan, Borneo, Indonesia. June 2010. Rehabilita...

Fiona Rogers / Bornean Orangutan (Pongo pygmaeus wurmbii) female 'Tutut' resting her head on her hand. Camp Leakey, Tanjung Puting National Park, Central Kalimantan, Borneo, Indonesia. July 2010. Rehabilitated and r...

Fiona Rogers / Bornean Orangutan (Pongo pygmaeus wurmbii) sub-adult male wading through water taking care to keep his balance as he is unable to swim. Camp Bulu, Lamandau Nature Reserve, Central Kalimantan, Borneo,...

Fiona Rogers / Bornean Orangutan (Pongo pygmaeus wurmbii) age 3-6 months being groomed by it's mother 'Gina'. Camp Leakey, Tanjung Puting National Park, Central Kalimantan, Borneo, Indonesia. June 2010. Rehabilitate...

Fiona Rogers / Bornean Orangutan (Pongo pygmaeus wurmbii) female 'Unyuk' holding her daughter 'Ursula' age 4. Camp Leakey, Tanjung Puting National Park, Central Kalimantan, Borneo, Indonesia. June 2010. Rehabilitate...

Fiona Rogers / Proboscis Monkey (Nasalis larvatus) mature male feeding on leaves, head portrait. Bako National Park, Sarawak, Borneo, Malaysia, April.

Fiona Rogers / Proboscis Monkey (Nasalis larvatus) mature male head and shoulders portrait. Bako National Park, Sarawak, Borneo, Malaysia, April. Did you know? A Proboscis monkey's nose can reach up to a quarter of...

Fiona Rogers / Proboscis Monkey (Nasalis larvatus) jumping through the forest canopy. Bako National Park, Sarawak, Borneo, Malaysia, April.

Fiona Rogers / Proboscis Monkey (Nasalis larvatus) sub-mature male sitting in a tree. Bako National Park, Sarawak, Borneo, Malaysia, March.

Fiona Rogers / Proboscis Monkey (Nasalis larvatus) sub-mature male sitting in a tree. Bako National Park, Sarawak, Borneo, Malaysia, March.

Fiona Rogers / Proboscis Monkey (Nasalis larvatus) male walking on the mudflats of a mangrove swamp revealed at low tide. Bako National Park, Sarawak, Borneo, Malaysia, March.

Fiona Rogers / Bonobo (Pan paniscus) female wading through water, Lola Ya Bonobo Sanctuary, Democratic Republic of Congo. October.

Fiona Rogers / Bonobo (Pan paniscus) adolescent male wading through water, Lola Ya Bonobo Sanctuary, Democratic Republic of Congo. October.

Fiona Rogers / Bonobo (Pan paniscus) adolescent male wading through water, calling, Lola Ya Bonobo Sanctuary, Democratic Republic of Congo. October.

Fiona Rogers / Head portrait of mature male Proboscis Monkey (Nasalis larvatus) feeding on leaves. Bako National Park, Sarawak, Borneo, Malaysia, April 2010.

Fiona Rogers / Bornean Orang-utan (Pongo pygmaeus wurmbii) female baby 'Petra' aged 12 months hanging upside down from her mother. Camp Leakey, Tanjung Puting National Park, Central Kalimantan, Borneo, Indonesia, Ju...

Fiona Rogers / Bornean Orang-utan (Pongo pygmaeus wurmbii) female 'Tata' and her unnamed baby aged 2-3 months portrait. Camp Leakey, Tanjung Puting National Park, Central Kalimantan, Borneo, Indonesia, June 2010. Re...

Fiona Rogers / Bornean Orang-utan (Pongo pygmaeus wurmbii) mature male 'Tom' head and shoulders portrait. Camp Leakey, Tanjung Puting National Park, Central Kalimantan, Borneo, Indonesia, June 2010. Rehabilitated an...

Fiona Rogers / Bornean Orang-utan (Pongo pygmaeus wurmbii) female baby 'Gita' aged 2 years portrait. Camp Leakey, Tanjung Puting National Park, Central Kalimantan, Borneo, Indonesia, July 2010. Rehabilitated and rel...

Fiona Rogers / Bornean Orang-utan (Pongo pygmaeus wurmbii) mature male 'Doyok's' hand holding a liana. Pondok Tanggui, Tanjung Puting National Park, Central Kalimantan, Borneo, Indonesia, June 2010. Rehabilitated an...

Fiona Rogers / Bornean Orang-utan (Pongo pygmaeus wurmbii) female 'Tutut' cradling her sleeping baby 'Thor' aged 8-9 months head portrait. Camp Leakey, Tanjung Puting National Park, Central Kalimantan, Borneo, Indon...

Fiona Rogers / Bornean Orang-utan (Pongo pygmaeus wurmbii) female baby 'Petra' aged 12 months portrait. Camp Leakey, Tanjung Puting National Park, Central Kalimantan, Borneo, Indonesia, July 2010. Rehabilitated and...

Fiona Rogers / Bornean Orang-utan (Pongo pygmaeus wurmbii) female 'Siswi's' hand holding foot close-up. Camp Leakey, Tanjung Puting National Park, Central Kalimantan, Borneo, Indonesia, June 2010. Rehabilitated and...

Fiona Rogers / Bornean Orang-utan (Pongo pygmaeus wurmbii) female 'Gara' sitting with her daughter 'Gita' aged 2 years. Camp Leakey, Tanjung Puting National Park, Central Kalimantan, Borneo, Indonesia, June 2010. Re...

Fiona Rogers / Bornean Orang-utan (Pongo pygmaeus wurmbii) male baby 'Thor' aged 8-9 months peering from behind his mother. Camp Leakey, Tanjung Puting National Park, Central Kalimantan, Borneo, Indonesia, June 2010...

Fiona Rogers / Bornean Orang-utan (Pongo pygmaeus wurmbii) mature male 'Tom' yawning head portrait. Camp Leakey, Tanjung Puting National Park, Central Kalimantan, Borneo, Indonesia, June 2010. Rehabilitated and rele...

Fiona Rogers / Gelada baboon (Theropithecus gelada) mature male and juvenile huddled together from the rain, Simien Mountains National Park, Ethiopia, November

Fiona Rogers / Gelada baboon (Theropithecus gelada) sub-mature male showing aggression by lip flipping, Simien Mountains National Park, Ethiopia, November

Fiona Rogers / Gelada baboon (Theropithecus gelada) male yawning showing teeth, Simien Mountains National Park, Ethiopia, November