Ingo Arndt / Tussock moth caterpillars mass together for defense. Comoe NP, Ivory Coast {Lymantriidae}. This behaviour tricks predators into thinking the caterpillars are a single, much larger, organism.

Diane McAllister,Diane McAllister / Japanese Macaque (Macaca fuscata) juvenile appears to be doing tricks to get some attention in Jigokudani, Japan.

Richard Steel / 2020VISION / Male Skylark (Alauda arvensis) in flight, singing, Denmark Farm, Lampeter, Ceredigion, Wales, UK, March. 2020VISION Book Plate. Did you know? The word skylark used to be used by sailors for playing t...

Jane Burton / Basset pup standing on hind legs.

Ingo Arndt / Tropical moth on leaf reveals eyespots to avoid predation, Costa Rica. Sequence 2/2

Ingo Arndt / Tropical moth on leaf reveals eyespots to avoid predation, Costa Rica. Sequence 1/2

Cyril Ruoso / Margit with wooded eggs used to trick female Common eider (Somateria mollissima) to stay on even one egg if any go missing for any reason, Lanan Island, Vega archipelago, Norway, June

Mark Taylor / Tabby kitten, Picasso, age 10 weeks, leaping out of wicker basket with the word 'Tadaa!' added digitally underneath

Franco Banfi / Asian elephant (Elephas maximus) painting using trunk, Bali Elephant Safari Park, Desa Taro forest, Bali Island, Indonesia, Pacific Ocean. September 2006.

Cyril Ruoso / Trained Asian elephant (Elephas maximus) playing football. Due to deforestation there is over population of elephants in the remaining forest. Therefore the Indonesian government are capturing and do...

Cyril Ruoso / Bird show with trained Blue-and-yellow macaw (Ara ararauna) and Sulfur crested cockatoo (Cacatua galerita) riding bicycles. Singapore Bird Park.

Cyril Ruoso / Yellow naped amazon parrot (Amazona auropalliata) singing into a microphone, Singapore Bird Park.

Mark Taylor / Beagle x Pug 'Puggle' bitch, age 1 year, balancing a ball on nose.

Mark Taylor / Beagle x Pug 'Puggle' bitch, age 1 year, balancing a ball on nose.

Philippe Clement / California sea lion (Zalophus californianus) jumping through hoop held by trainer during show, Cabarceno Natural Park, Penagos, Cantabria, Spain, May 2014. Captive, occurs in Canada, Mexico and the Un...

Philippe Clement / California sea lion (Zalophus californianus) performing trick, standing on one flipper, Cabarceno Natural Park,, Cantabria, Spain, May 2014.

Loic Poidevin / Mass of communal caterpillars, this behaviour tricks predators into thinking the caterpillars are a single, much larger, organism, Madagascar.

Petra Wegner / Cavalier King Charles Spaniel, tricolour, sitting on hind legs.

Aflo / Portrait of young boy feeding a begging long-haired Dachshund

Ernie Janes / Pet Sulphur crested cockatoo (Cacatua galerita) looking at itself in mirror with crest raised, UK

Petra Wegner / Girl training Cavalier King Charles Spaniel to shake hands with its paw, tricolour

Aflo / ic-04803 Terrier dog standing on black legs to beg.

Jane Burton / Girl teaching Staffordshire Bull Terrier cross pup to give a paw

Jane Burton / Jack Russell Terrier x Collie puppy standing on hind legs playing with a toy.

Jane Burton / Boy (9) training his tricolour Border Collie pup to sit for a titbit

Jane Burton / Girl offering pregnant Border terrier a titbit for standing on hind legs and begging

Jane Burton / Border Collie giving paw

Jane Burton / English Springer Spaniel dog sitting up on his hind legs

Jane Burton / Patterdale x Jack Russell Terrier standing on hind legs looking up at treat held by owner.

Jane Burton / Ruby Cavalier King Charles Spaniel bitch, standing up on hind legs

Jane Burton / English Springer spaniel dog giving paw and looking up

Jane Burton / Two Dachshund cross pups, 12 weeks old, one standing on its hind legs

Jane Burton / Dalmatian pup standing on hind legs

Jane Burton / Border Collie bitch standing on her hind legs, about to catch her ball.

Jane Burton / Border Terrier bitch standing on her hind legs.

Jane Burton / Yorkshire Terrier standing on her hind legs.

Jane Burton / White-faced Border Collie dog 'begging'.

Jane Burton / English Bull Terrier sitting, about to give a paw.

Jane Burton / English Bull Terrier sitting, giving a paw.

Jane Burton / Blue Harlequin Great Dane pup, 'Maisie', 'giving a paw'.

Jane Burton / Boxer pup, 11 weeks old, standing on hind legs

Jane Burton / Golden Retriever sitting up with paws raised.

Petra Wegner / Domestic dog, Long-haired Weimaraner sitting on hind legs with front paws in the air

Petra Wegner / Domestic dog, Border Collie in begging position / sitting on hind legs

Petra Wegner / Domestic dog, Miniature Schnauzer (black-silver), standing on hind legs

Petra Wegner / Domestic dog, Miniature Schnauzer (black-silver), standing on hind legs looking up

Petra Wegner / Domestic dog, Miniature Schnauzer (black-silver), giving paw to human / giving 'ten'

Petra Wegner / Domestic dog, Miniature Schnauzer (black-silver), giving paw to human / 'high-five'

Petra Wegner / Domestic dog, German Boxer puppy, getting treat

Petra Wegner / Domestic dog, Beagle balancing food on her nose

Petra Wegner / Domestic dog, Beagle balancing food on her nose

Petra Wegner / Domestic dog, Beagle balancing food on her nose

Petra Wegner / Domestic dog, Beagle balancing food on her nose

Petra Wegner / Domestic dog, Beagle bitch begging, sitting on hind legs with paws in the air

Petra Wegner / Domestic dog, Beagle bitch sitting on hind legs with paws in the air

Yves Lanceau / Domestic dog, Cairn Terrier sitting up on back legs, begging, France

Yves Lanceau / Domestic dog, Cairn Terrier sitting up on back legs, begging, France

Yves Lanceau / Domestic dog, Cairn Terrier standing on back legs, France

Yves Lanceau / Domestic rabbit, Fauve de Bourgogne, young rabbit in box

Mark Taylor / Forced Perspective photo of a giant in the saltflats of Salar de Uyuni, Bolivia.

Mark Taylor / Forced perspective photo of a young woman appearing to stand / balance on a dog's nose, UK.

Mark Taylor / Forced perspective photo of a horse appearing to stand on a dog's back, UK.

Maxime Aliaga / Forced perspective photo of a giantwoman in the saltflats of Salar de Uyuni, Bolivia.

Sandesh Kadur / Sambar (Rusa unicolor), Ranthambore National Park, Rajasthan, India. Antlers and ears of male visible behind female. Vulnerable species.

Sandesh Kadur / Diademed sifaka (Propithecus diadema), mother carrying her young on her back (legs of young are visible beneath mother's). Andasibe National Park, Madagascar. Critically Endangered species.

Mary McDonald / South African / Cape giraffe (Giraffa camelopardalis giraffa), two males necking / mock fighting, looking like a double headed animal, Zimanga Private Game Reserve, Zululand, South Africa.

Konrad Wothe / Ostrich (Struthio camelus) male preening, looking headless, Samburu Reserve, Kenya, Africa

Heather Angel / Emperor penguin (Aptenodytes forsteri) parent feeding chick, another chick next to it looks headless, Antarctica

Dr. Gertrud Neumann-Denzau / Two male Indian Wild Asses (Equus hemionus khur), looking like they share a single head, Little Rann of Kutch, Gujarat, SW India.

Fabrice Cahez / Common crane (Grus grus) in flight, looking like it has two sets of wings, France. Wings of second individual visible in the background

Eric Dragesco / Two Chamois (Rupicapra rupicapra) in snow, Gran Paradiso National Park, Italy.

Edwin Giesbers / Two Reindeer (Rangifer tarandus) in snow, looking like a single double-headed animal, Norway. Captive

Diane McAllister / Humpback whale (Megaptera novaeangliae) breaching in front of boat carrying tourists. Monterey Bay, California, USA.

David Welling / Collared peccaries (Tayassu tajacu) interacting, two looking like one, Hidalgo Lower Rio Grande Valley, Texas, USA. (non-ex)

David Allemand / Lappet-faced vultures (Torgos tracheliotu) looking like one double-headed bird, Etosha National Park, Namibia, Africa

Claudio Contreras / Blue footed booby (Sula nebouxii) watching chick, Isabel Island National Park, Sea of Cortez (Gulf of California) Mexico.

Philippe Clement / Three California sea lions (Zalophus californianus) performing with zookeeper at the French zoo ZooParc de Beauval, France, September 2018