Stephane Granzotto / Alpine marmot (Marmota marmota) standing alert outside burrow, takes fright and runs inside, Rhone-Alpes, France, July.

Jabruson / Mozambican children with captive Yellow Baboon youngster (Papio cynocephalus). Young animal caught during troop crop raiding. Pemba to Montepuez highway, north-eastern Mozambique, November 2011. Wildl...

Hermann Brehm / Young Tigress (Panthera tigris), 22 month, being frightened by a dead leaf. Banghavgarh National Park, India, April.

Floris van Breugel / Burrowing Owl (Athene cunicularia) standing at entrance to burrow, and watching a Red-tailed Hawk circling above. Salton Sea, California, USA.

Floris van Breugel / Three juvenile mountain goats (Oreamnos americanus) galloping through the Mt. Evans landscape backlit by the setting sun. Colorado, USA

Mark Taylor / Ginger kitten with tail in the air

Andy Rouse / European brown hare (Lepus europaeus) leveret crouching low in grass, UK

Terry Whittaker / Hedgehog (Erinaceus europaeus) feeding in an urban garden, frightened away by an approaching Red fox (Vulpes vulpes), Greater Manchester, UK, August. Filmed using a camera trap.

Mark Taylor / Black-and-white kitten frightened by tabby kitten.

Anup Shah / Eastern chimpanzee (Pan troglodytes schweinfurtheii) sub-adult male 'Fundi' aged 12 years frightened by his uncle Alpha male 'Ferdinand'. Gombe National Park, Tanzania. October 2012.

Denis-Huot / Leopard (Panthera pardus) cub aged 1 month, frightened by approaching jackals. Masai-Mara game reserve, Kenya.

Clay Bolt / Man looking frightened by spider, Silver Argiope (Argiope argenta) on web, Florida, USA, March 203.

Michael Pitts / Barbary macaque (Macaca sylvanus) in threat display with person looking scared, on the cable car lift, Gibraltar, December.

Diane McAllister / Japanese Macaques (Macaca fuscata) mothers guarding their babies as other monkeys approach down the hillside in Jigokudani, Japan.

Laurent Geslin / Woman screaming at sight of House spider {Tegeraria gigantea} Europe

Cyril Ruoso / Western Lowland Gorilla (Gorilla gorilla gorilla) five year old orphans frightened by an elephant nearby, part of reintroduction project by Aspinall Foundation, Bateke Plateau National Park, Gabon

Jabruson / Mozambican children with captive Yellow Baboon youngster (Papio cynocephalus) caught during troop crop raiding. Pemba to Montepuez highway, North-eastern Mozambique, November 2011

Anup Shah / Olive baboon (Papio cynocephalus anubis) baby aged 3-6 months clinging to his mother frightened by another female who wants to hold him, Masai Mara National Reserve, Kenya, August.

Rod Williams / Southern mitered langur (Presbytis melalophos mitrata) South East Sumatra, endangered species. Captive.

Roland Seitre / Primate Conservation Research and Rescue rangers releasing a rehabilitated Grivet Monkey (Chlorocebus aethiops). Ukunda, Diani Beach, Kenya.

Andy Rouse / Nile Crocodile (Crocodylus niloticus) pursuing zebra during migration crossing of the Mara River. Masai Mara, Kenya, Africa.

Klaus Echle / Hare (Lepus europaeus) with flattened ears in dewey grass. Black Forest, Germany, April.

Klaus Echle / Badger (Meles meles) showing a frightened expression. The Black Forest, Germany, June.

Frederique Olivier / Rockhopper penguin (Eudyptes chrysocome) vocalising, frightened by perched Skua, Macquarie Island, Southern Atlantic, Australian Antarctica, December

Laurie Campbell / Mountain Hare (Lepus timidus) leveret crouching low, Cairngorms National Park, Scotland, June

Yukihiro Fukuda / Japanese macaque (Macaca fuscata) juvenile crying due to being frightened, Jigokudani, Joshinetsu Kogen NP, Nagano, Japan

Jabruson / Young Olive baboon {Papio anubis} clings to keeper, Virunga NP, Dem Rep Congo

Jane Burton / Domestic Cat {Felis catus} Blue burmese kitten, frightened with fur raised along back and tail fluffed up

Karl Ammann / Orphaned baby chimpanzee (Pan troglodytes) kept as a pet, Central Africa. Chimpanzees have become a status symbol in some parts of Central Africa.

Anup Shah / Sumatran Orang utan baby 'Forester' (Pongo abelii), Gunung Leuser NP, Sumatra, Indonesia

Yva Momatiuk & John Eastcott / Mustang (Equus caballus) frightened horses bunch up together, Fifteen Mile Herd Management Area, central Wyoming

Nick Garbutt / Female Southern plains grey / Hanuman langur (Semnopithecus dussumeri), India

Vincent Grafhorst / Chacma Baboon (Papio ursinus) with frightened posture, Gaborone Game Reserve, Botswana

Suzi Eszterhas / African Lion (Panthera leo) mother greeting female pride member with frightened six to seven week old cub below, vulnerable, Masai Mara National Reserve, Kenya