Gerry Ellis / Chimpanzee (Pan troglodytes) orphans, Larry investigating Daphne's tongue, Ape Action Africa, Mefou Primate Sanctuary, Cameroon

Inaki Relanzon / Keeper examining African elephant calf's (Loxodonta africana) trunk, David Sheldrick African Elephant Orphanage. Nairobi National Park, Nairobi, Kenya.

Suzi Eszterhas / Aye-aye (Daubentonia madagascariensis) three month old baby, Duke Lemur Center, North Carolina

Danny Green / Snow Monkey (Macaca fuscata) with snow covered paw in front of mouth, Nagano, Japan, February

Ole Jorgen Liodden / L'Hoest's monkey (Cercopithecus lhoesti) feeding on leaves, Rwanda.

Jabruson / Hammer Headed bats (Hypsignathus monstrosus) in gloved hand - live mist net catch for blood sampling in search of the unknown reservoir host for Ebola virus. Ebola outbreaks in Mbomo in 2003 killed 12...

Anup Shah / Bornean Orangutan (Pongo pygmaeus wurmbii) female baby 'Petra' aged 12 months. Camp Leakey, Tanjung Puting National Park, Central Kalimantan, Borneo, Indonesia. July 2010. Rehabilitated and released (...

Suzi Eszterhas / Sumatran Orangutan (Pongo abelii) two and a half year old baby calling, Gunung Leuser National Park, north Sumatra, Indonesia

Mark Bowler / Sustainable river fishing for Silver Arowana / Arahuana (Osteoglossum bicirrhosum) for the tropical fish trade - baby Arowana fish fry are harvested from the adult male (this species is a mouth broode...

Mark Bowler / Red howler monkey (Alouatta seniculus) howling, captive, digitally modified

ZSSD / Chimpanzee (Pan troglodytes) calling while reclining, native to Africa

TJ Rich / Portrait of male silverback Western Lowland gorilla {Gorilla gorilla gorilla} with fingers in mouth UK