Thomas Marent / Splendid Poison Dart Frog (Dendrobates sylvaticus) in rainforest, Timbiqui, Colombia

Thomas Marent / Golden Poison Dart Frog (Phyllobates terribilis) in rainforest, Timbiqui, Colombia

Paul Bertner / Caterpillar with aposematic coloration, Gunung Leuser National Park, Sumatra, Indonesia

Chien Lee / Harlequin Poison Dart Frog (Dendrobates histrionicus), Utria National Park, Colombia

Chien Lee / Ecuador Poison Frog (Epipedobates bilinguis), El Coca, Ecuador

Chien Lee / Condoto Stubfoot Toad (Atelopus spurrelli), Utria National Park, Colombia

Chien Lee / Red-headed Krait (Bungarus flaviceps) in rainforest, Santubong National Park, Sarawak, Borneo, Malaysia

Chien Lee / Golden Mantella (Mantella aurantiaca) in forest, Andasibe, Madagascar

Chien Lee / Golden Mantella (Mantella aurantiaca), Andasibe, Madagascar

Paul Bertner / Spiny Spider (Gasteracantha falcicornis), Udzungwa Mountains National Park, Tanzania

Ingo Arndt / Cecropia moth caterpillar with warning coloration {Hyalophora cecropia} North America

Hiroya Minakuchi / Jellyfish (Spirocodon saltator), Japan

Chien Lee / Red Stink Bug (Pycanum rubeus) hatchlings cluster to amplify the effect of their aposematic warning coloration, Malaysia

Roland Seitre / Dingo (Canis lupus dingo) black and white pup, native to Australia

Sergey Gorshkov / Snow Goose (Chen caerulescens) pair courting, Wrangel Island, Russia. Sequence 3 of 4

Roland Seitre / Vicente's Poison Frog (Dendrobates vicentei), native to Panama

Roland Seitre / Harlequin Poison Dart Frog (Dendrobates histrionicus) in defensive posture, native to South America

Piotr Naskrecki / Fulgorid Planthopper (Fulgoridae) spreading wings to show aposematic coloration, Costa Rica

Piotr Naskrecki / Tessaratomid (Tessaratomidae) nymph with warning coloration, Papua New Guinea

Piotr Naskrecki / Looper Moth (Geometridae) caterpillar with aposematic coloration, Atewa Range, Ghana

Hiroya Minakuchi / Kunie's Chromodorid Nudibranch (Chromodoris kuniei), Borneo, Malaysia

Hiroya Minakuchi / Nudibranch (Hypselodoris bullockii) pair mating, Borneo, Malaysia

Thomas Marent / Dyeing Poison Frog (Dendrobates tinctorius), Kaw, French Guiana

Thomas Marent / Alpine Newt (Ichthyosaura alpestris) male, Switzerland

Thomas Marent / Alpine Newt (Ichthyosaura alpestris) male, Switzerland

Thomas Marent / Alpine Newt (Ichthyosaura alpestris) male, Switzerland

Thomas Marent / Alpine Newt (Ichthyosaura alpestris) female, Switzerland

Yva Momatiuk & John Eastcott / Saplings amidst coniferous trees burned by forest fire, Yellowstone National Park, Wyoming

Yva Momatiuk & John Eastcott / Sapling amid coniferous trees burned by forest fire, Yellowstone National Park, Wyoming

Piotr Naskrecki / Grasshopper with aposematic coloration aerates toxic blood as a defensive behavior, Kwazulu Natal, South Africa

Piotr Naskrecki / Grasshopper with aposematic coloration, Maloti Mountains, Lesotho, South Africa

Thomas Marent / Eyelash Viper (Bothriechis schlegelii) with yellow coloration, coiled on branch, Cahuita National Park, Costa Rica

Piotr Naskrecki / Milkweed Grasshopper (Phymateus morbillosus) member of the Foam grasshopper family has aposematic coloration, South Africa

Michael & Patricia Fogden / Harlequin Frog (Atelopus varius) displaying warning coloration, Monteverde, Costa Rica

Piotr Naskrecki / Spiked Spider (Gasteracantha sp) their abdomen, or opisthosoma, is heavily sclerotized and armed with hard spines possibly to protect against birds and lizards, Solomon Islands

Michael & Patricia Fogden / Clark's Coral Snake (Micrurus clarki) venomous snake with warning coloration, rainforest, Costa Rica

Mark Moffett / Slug Caterpillar (Setora fletcheri) shows warning coloration and spines loaded with toxins that erect when the animal is disturbed, Tam Dao National Park, Vietnam

Paul Hobson / Crested newt male breeding coloration {Triturus vulgaris} Yorkshire, UK

Tony Phelps / Yellow bellied toad {Bombina variegata} warning display Europe

Paul Bertner / Leafhopper (Cicadellidae) nymph, Tambopata Research Center, Peru

Thomas Marent / Flag-footed Bug (Anisocelis flavolineata), Tatama National Park, Colombia

Thomas Marent / Splendid Poison Dart Frog (Dendrobates sylvaticus), Timbiqui, Colombia

Thomas Marent / Golden Poison Dart Frog (Phyllobates terribilis), Timbiqui, Colombia

Thomas Marent / Golden Poison Dart Frog (Phyllobates terribilis) in rainforest, Timbiqui, Colombia

Thomas Marent / Golden Poison Dart Frog (Phyllobates terribilis) in rainforest, Timbiqui, Colombia

Thomas Marent / Golden Poison Dart Frog (Phyllobates terribilis), Timbiqui, Colombia

Thomas Marent / Santander Poison Frog (Andinobates virolinensis), Santander, Colombia

Thomas Marent / Santander Poison Frog (Andinobates virolinensis), Santander, Colombia

Thomas Marent / Tree Frog (Dendropsophus manonegra) showing night coloration, newly discovered species, Putumayo, Colombia. Sequence 2 of 2

Thomas Marent / Tree Frog (Dendropsophus manonegra) showing day coloration, newly discovered species, Putumayo, Colombia. Sequence 1 of 2

Thomas Marent / Orange fungus, Putumayo, Colombia

Piotr Naskrecki / Reimer's Katydid (Pardalota reimeri) in defensive posture, Quirimbas National Park, Mozambique

Piotr Naskrecki / Green Milkweed Locust (Phymateus viridipes) in defensive posture, Mpumalanga, South Africa

Piotr Naskrecki / African Flower Mantis (Pseudocreobotra wahlbergi) in defensive posture, Gorongosa National Park, Mozambique

Piotr Naskrecki / Mozambique Girdled Lizard (Smaug mossambicus), Gorongosa National Park, Mozambique

Piotr Naskrecki / Small Goliath Beetle (Cheirolasia burkei), Gorongosa National Park, Mozambique

Piotr Naskrecki / Granular Poison Dart Frog (Dendrobates granuliferus), Costa Rica

Piotr Naskrecki / Lubber Grasshopper (Taeniopoda gutturosa) in defensive posture, Belize

Paul Bertner / Red-banded Poison Frog (Dendrobates lehmanni), Valle del Cauca, Colombia

Chris Mattison / Common toad (Bufo bufo) with reddish coloration, Whitelye Common Nature Reserve, Monmouthshire, Wales, UK

Paul Bertner / Crab, Bukit Barisan Selatan National Park, Indonesia

Paul Bertner / Rover Beetle (Staphylinidae), Mount Isarog National Park, Philippines

Paul Bertner / Beetle larva, Gunung Leuser National Park, Sumatra, Indonesia

Paul Bertner / Mite, Udzungwa Mountains National Park, Tanzania

Paul Bertner / Katydid (Tettigoniidae) juvenile moulting, Udzungwa Mountains National Park, Tanzania

Paul Bertner / Grasshopper nymphs, Bukit Barisan Selatan National Park, Indonesia

Paul Bertner / Katydid (Tettigoniidae) juvenile, Udzungwa Mountains National Park, Tanzania

Paul Bertner / Cockroach on mushrooms, Kinabalu National Park, Sabah, Borneo, Malaysia

Paul Bertner / Cockroach (Blattidae) nymph, beetle mimic, Yasuni National Park, Ecuador

Emanuele Biggi / Golden green stag beetle (Lamprima sp.), adult female with a shiny iridescent coloration, Italy. Captive.

Emanuele Biggi / Golden green stag beetle (Lamprima sp.), adult male with big mandibles and a shiny iridescent coloration, Italy. Captive.

Chien Lee / Orb-weaver Spider (Paraplectana sp), ladybird mimic, Muara Wahau, East Kalimantan, Indonesia

Chien Lee / Harlequin Poison Dart Frog (Dendrobates histrionicus), Utria National Park, Colombia

Chien Lee / Ecuador Poison Frog (Epipedobates bilinguis), El Coca, Ecuador

Chien Lee / Saturniid Moth (Bathyphlebia eminens) in rainforest, Cosanga, Ecuador

Yva Momatiuk & John Eastcott / Reflection of boats in fjord, Iceland

Jen Guyton / Flap-necked chameleon (Chamaeleo dilepis) with defensive coloration, Greater Gorongosa Ecosystem, Mozambique. Controlled conditions.

Jen Guyton / Flap-necked chameleon (Chamaeleo dilepis) with defensive coloration, Greater Gorongosa Ecosystem, Mozambique. Controlled conditions.

Chien Lee / Condoto Stubfoot Toad (Atelopus spurrelli) in rainforest, Utria National Park, Colombia

Chien Lee / Red-headed Krait (Bungarus flaviceps), Santubong National Park, Sarawak, Borneo, Malaysia

Chien Lee / Blue-legged Mantella (Mantella expectata), Isalo National Park, Madagascar

Chien Lee / Baron's Mantella (Mantella baroni), Mantadia National Park, Madagascar

Martin Grimm/ BIA / Fly Agaric (Amanita muscaria) mushrooms in autumn, Hesse, Germany

Paul Bertner / Cup Moth (Limacodidae) caterpillar, Angkor Wat, Cambodia

Paul Bertner / Cockroach (Chorisoneura sp), Yasuni National Park, Ecuador

Paul Bertner / Eyelash Viper (Bothriechis schlegelii), Braulio Carrillo National Park, Costa Rica

Paul Bertner / Spiked Spider (Gasteracantha sp), Angkor Wat, Cambodia

Paul Bertner / Weevil (Lixus sp) with yellow wax, Antananarivo, Madagascar

Paul Bertner / Planthopper (Ricaniidae), Andasibe-Mantadia National Park, Madagascar

Paul Bertner / Velvet Mite (Trombidiidae), Ankarafantsika National Park, Madagascar

Paul Bertner / Springtail (Neanuridae), Bukit Barisan Selatan National Park, Sumatra, Indonesia

Paul Bertner / Signal Fly (Bromophila caffra), Udzungwa Mountains National Park, Tanzania

Paul Bertner / Signal Fly (Bromophila caffra), Udzungwa Mountains National Park, Tanzania

Paul Bertner / Millipede (Polydesmidae), Bukit Barisan Selatan National Park, Sumatra, Indonesia

Paul Bertner / Flatid Leaf Bug (Phromnia rosea) group, Ankarana Special Reserve, Madagascar

Paul Bertner / Common Rose (Pachliopta aristolochiae) caterpillar, Cat Tien National Park, Vietnam