Phil Savoie / Red eyed tree frog on heliconia (Agalychnis callidryas)

Mark Hamblin / 2020VISION / Male Red eyed damselfly (Erythromma najas) on Purple loosestrife (Lythrum salicaria) flower, Bedfordshire, England, UK, July 2012.

Ole Jorgen Liodden / Yellow-eyed Penguin (Megadyptes antipodes) endangered specie, Auckland Island, New Zealand. November.

Andy Trowbridge / Yellow-eyed Penguins (Megadyptes antipodes) vocalising with chick. Endangered species. Katiki Point, Moeraki, Otago, New Zealand. January.

Andy Trowbridge / Yellow-eyed Penguin (Megadyptes antipodes) or Hoiho calling. Katiki Point, Moeraki, Otago, South Island, New Zealand. January. Endangered species

Daniel Heuclin / Kramer's / Large Eyed Pit Viper (Cryptelytrops / Trimeresurus macrops). Captive. Endemic to South East Asia.

Juergen Freund / Two Twinspot / Crabeye gobies (Signigobius biocellatus) West New Britain, Papua New Guinea.

Juergen Freund / Eyed / Leopard sea cucumber (Bohadschia argus), close-up of the skin. Lembeh Strait, North Sulawesi, Indonesia.

Juergen Freund / Imperial / Emperor shrimp (Periclimenes imperator / Zenopontonia rex) on an Eyed / Leopard sea cucumber (Bohadschia argus). Lembeh Strait, North Sulawesi, Indonesia

Juergen Freund / Imperial / Emperor shrimp (Periclimenes imperator / Zenopontonia rex) on an Eyed / Leopard sea cucumber (Bohadschia argus). Lembeh Strait, North Sulawesi, Indonesia.

Mark Taylor / Portrait of a young Little Owl (Athene noctua).

Juan Carlos Munoz / Imperial shag / Blue eyed cormorant colony (Phalacrocorax atriceps), showing birds on nests, with one bird flying above. Patagonia, Argentina, March 2008

Kim Taylor / Three-eyed Iguanid Lizard (Chalarodon madargascariensis) portrait standing.

Steve Gettle / Dark-eyed Junco (Junco hyemalis) on branch with frozen berries, North America

Tim Laman / Head portrait of a Wild Western / Sunda tarsier (Tarsius bancanus) on tree trunk at night. Danum Valley Conservation Area, Borneo, Sabah, Malaysia

Kristel Richard / Close up of the curved ears of a rare Cremello Kathiawari mare with young Indian boy riding her, in Jasdan, Gujarat, India. The pink points on her head are tradionally put by women during ceremonies,...

Neil Lucas / Weddell seal (Leptonychotes weddellii) male surfacing in ice hole, McMurdo Sound, Ross Sea, Antarctica, November 2008

Stephen Dalton / Red-eyed tree frog (Agalychnis callidryas) leaping to catch cricket, Central America, controlled conditions

Robert Thompson / Red-eyed tree frog {Agalychnis callidryas} resting in Bromeliad flower, Nicaragua, June

Wild Wonders of Europe / Banfi / Wide-eyed flounder (Bothus podas) on seabed, Marine Reserve, Monaco, Mediterranean Sea, July 2009

Stephen Dalton / Red eyed tree frog (Agalychnis callidryas) on Bromeliad leaf, Central America, controlled conditions

Stephen Dalton / Red eyed tree frog (Agalychnis callidryas) climbing up plant stems, controlled conditions, from Central America

Mark Bowler,Mark Bowler / Red eyed tree frog (Agalychnis callidryas) walking, digital composite Captive

Mark Bowler / Red eyed tree frog (Agalychnis callidryas) close-up of head Captive

Mark Bowler / Red eyed tree frog (Agalychnis callidryas) Captive

Mark Bowler / Red eyed tree frog (Agalychnis callidryas) sitting on bamboo, digital composite Captive

Mark Bowler / Red eyed tree frog (Agalychnis callidryas) sitting

Mark Taylor / Silver tabby kitten with big eyes.

Tim Laman / Orange / Red eyed treefrog (Litoria chloris) in the rainforest of the Atherton Tablelands, Queensland, Australia

Martin van Lokven / Red-eyed Tree Frog (Agalychnis callidryas), Laguna del Lagarto, Boca Tapada, Costa Rica

Juergen Freund / Crab eyed goby (Signigobius biocellatus) Indo-pacific

Tim Laman / Red-eyed tree frog (Agalychnis callidryas). Piedras Blancas National Park, Esquinas Rainforest Lodge, Costa Rica.

Tim Fitzharris / Red-eyed Tree Frog (Agalychnis callidryas), Costa Rica

Thomas Marent / Red-eyed Tree Frog (Agalychnis callidryas), Cahuita National Park, Costa Rica

Edwin Giesbers / Red eyed tree frog (Agalychnis callidryas) portrait, Costa Rica

Edwin Giesbers / Red eyed tree frog (Agalychnis callidryas) looking over the edge of a leaf, Costa Rica

Edwin Giesbers / Red eyed tree frog (Agalychnis callidryas) on Heliconia flower, Costa Rica

Fabio Liverani / European Edible Frog (Rana esculenta) eating a Green eyed hook tailed dragonfly (Onychogomphus forcupatus) amongst pond weed, Grigne Mountains, Lombardia Region, Italy

PREMAPHOTOS / Red-eyed tree frog (Litoria chloris) male with inflated throat sac, calling at night. Queensland, Australia

PREMAPHOTOS / Red-eyed tree frog (Litoria chloris) male with inflated throat sac, calling at night. Queensland, Australia

Thomas Marent / Red-eyed Tree Frog (Agalychnis callidryas) on Heliconia (Heliconia sp) flower, Cahuita National Park, Costa Rica

Thomas Marent / Red-eyed Tree Frog (Agalychnis callidryas) on Heliconia (Heliconia sp) flower, Cahuita National Park, Costa Rica

Jane Burton / Odd-eyed Border Collie pup, 12 weeks old, lying with black and white kitten, 6 weeks old

Tim Fitzharris / Red-eyed Tree Frog (Agalychnis callidryas) three sitting on Heliconia (Heliconia sp), Costa Rica, Digital composite

Tim Fitzharris / Red-eyed Tree Frog (Agalychnis callidryas) climbing on flower, Costa Rica

Christian Ziegler / Red-eyed Tree Frog (Agalychnis callidryas) three males sitting on a stem, Soberania National Park, Panama

Piotr Naskrecki / Malagasy Web-footed Frog (Boophis luteus) clinging to limb, Madagascar

David Kjaer / Red eyed tree frog {Agalychnis callidryas} perching on leaf, Captive.

Kim Taylor / Golden-eyed Horse Fly (Chrysops quadratus), close-up of eyes. UK

Doug Perrine / Grey faced / White eyed moray eel {Siderea thyrsoidea} and Bleeker's parrotfish sleeping wrapped in mucus.

Phil Savoie / Red eyed tree frog legs - leaping from Heliconia - Sequence 2 (Agalychnis callidryas)

Kim Taylor / Eyed ladybird {Adalia ocellata} taking off. UK.

Pete Oxford / Maroon eyed leaf frogs {Agalychnis litodryas} Esmeraldas, Ecuador

Michael Durham / Red-eyed Tree Frog (Agalychnis callidryas) portrait, native to Central and South America

Michael Durham / Red-eyed Tree Frog (Agalychnis callidryas), native to Central and South America

Michael Durham / Red-eyed Tree Frog (Agalychnis callidryas) in rain, native to Central and South America

Michael Durham / Red-eyed Tree Frog (Agalychnis callidryas) in rain, native to Central and South America

Michael Durham / Red-eyed Tree Frog (Agalychnis callidryas) in rain, native to Central and South America

Michael Durham / Red-eyed Tree Frog (Agalychnis callidryas) on flower petal, native to Central and South America

Phil Savoie / Red eyed tree frog portrait (Agalychnis callidryas)

Phil Savoie / Red eyed tree frog on heliconia C (Agalychnis callidryas) 1 of 2 Sequence 1 - about to jump

Phil Savoie / Red eyed tree frog on heliconia (Agalychnis callidryas)

Phil Savoie / Red eyed treef rog on heliconia (Agalychnis callidryas) C

TIM MARTIN / Red Eyed Tree frogs mating, Costa Rica

Norbert Wu / Green Sea Turtle (Chelonia mydas) being cleaned by Yellow-eyed Surgeonfish (Ctenochaetus strigosus), Hawaii

Michael & Patricia Fogden / Blue-sided Leaf Frog (Agalychnis annae) hanging on leaf, close-up, cloud forest, Costa Rica

Michael & Patricia Fogden / Red-eyed Tree Frog (Agalychnis callidryas) tadpoles in rain water pond, Costa Rica

Michael & Patricia Fogden / Red-eyed Tree Frog (Agalychnis callidryas) on (Heliconia mathiasii) rainforest, Costa Rica

Birgitte Wilms / Diana's Hogfish (Bodianus diana) and Soft Coral (Dendronephthya sp), Red Sea, Egypt

Norbert Wu / Bottlenose Dolphin (Tursiops truncatus) chases a school of Bigeye Scad (Selar crumenophthalmus), Roatan, Honduras

Pete Oxford / Yellow-eyed penguin in forest {Megadyptes antipodes} Enderby Island, Auckland Is, New Zealand

Pete Oxford / Yellow-eyed penguin & chick near nest {Megadyptes antipodes} Enderby Is, New Zealand

Pete Oxford / Yellow-eyed penguin {Megadyptes antipodes} Aukland Is, New Zealand

Ben Osborne / Ian McCarthy in Antarctica filming Blue-eyed cormorants for BBC television series 'Life in the Freezer'

Pete Oxford / Yellow-eyed penguin preening feathers, Aukland Island, New Zealand

Pete Oxford / Yellow-eyed penguin, Aukland Island, New Zealand

Marcelo rocha / John Downer Pr / Rear view of Eyespot / False eyed frog, with defensive eye-like markings to frighten away predators (Resolution restriction - image digitised from film, 'Weird Nature' tv series)

Juan Manuel Borrero / Red-eyed Treefrog (Agalychnis callidryas) peering from behind a leaf, captive from South America

Juan Manuel Borrero / Red-eyed Treefrog (Agalychnis callidryas) on leaf, captive, from South America

Juan Manuel Borrero / Red-eyed Treefrog (Agalychnis callidryas) sleeping on leaf, captive from South America

Juan Manuel Borrero / Red-eyed Treefrog (Agalychnis callidryas) resting on a leaf, captive from South America

Juan Manuel Borrero / Red-eyed Treefrog (Agalychnis callidryas) resting on bromeliad flower, captive from South America

Juan Manuel Borrero / Red-eyed Treefrog (Agalychnis callidryas) resting on bromeliad flower, captive from South America

Juan Manuel Borrero / Red-eyed Treefrog (Agalychnis callidryas) on red bromeliad flower, captive from South America

Juan Manuel Borrero / Red-eyed Treefrog (Agalychnis callidryas) hiding in a bromeliad flower, captive from South America

Chris Mattison / Namibian / Big Eyed House Snake (Boaedon / Lamprophis mentalis). Springbok, South Africa, October.

Chris Mattison / Namibian / Big Eyed House Snake (Boaedon / Lamprophis mentalis). Springbok, South Africa, October.

Chris Mattison / Namibian / Big Eyed House Snake (Boaedon / Lamprophis mentalis). Springbok, South Africa, October.

Alex Hyde / Eyed hawkmoth (Smerinthus ocellatus) showing eye spots on wings during deimatic display to deter predators, Surrey, UK. Sequence 2 of 2.

Alex Hyde / Eyed hawkmoth (Smerinthus ocellatus) at rest camouflaged on bark, Surrey, UK. Sequence 1 of 2.

Ingo Arndt / Red-eyed Tree Frog (Agalychnis callidryas) pair in amplexus sleeping with closed eyes, Costa Rica

Ingo Arndt / Red-eyed Tree Frog (Agalychnis callidryas) pair in amplexus, Costa Rica

Ingo Arndt / Red-eyed Tree Frog (Agalychnis callidryas) eye closed with semi-transparent eyelid that allows it to see its surroundings even while resting, Costa Rica

Ingo Arndt / Red-eyed Tree Frog (Agalychnis callidryas) eye, Costa Rica