Lucas Bustamante / Anthony's poison-frog (Epipedobates anthonyi) seen through hole in leaf. Buenaventura Reserve, El Oro, Ecuador.

Bert Willaert / Marbled poison dart frog (Epipedobates boulengeri) on leaf, Ecuador.

Bert Willaert / Brightly Coloured Poison-Dart Frog (Oophaga sylvatica). Ecuador, South America.

MORLEY READ / Poison arrow frog {Dendrobates / Epipedobates bilinguis} Yasuni NP, Ecuador

Pete Oxford / Poison arrow frog guarding its eggs {Epipedobates tricolor} Ecuador

Doug Wechsler / Phantasmal poison arrow frog {Epipedobates tricolor} in cloud forest, El Oro, Ecuador

Pete Oxford / Harlequin Poison Arrow Frog {Dendrobates histrionicus} Ecuador

Pete Oxford / Poison arrow frog {Dendrobates histrionicus} Western Ecuador

Pete Oxford / Poison Arrow Frog (Epipedobates tricolor) Ecuador Amazon South-America. colourful.

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

Mark Moffett / Red-headed Poison Frog (Dendrobates fantasticus) portrait, Amazonia, Ecuador

Mark Moffett / Red-headed Poison Frog (Dendrobates fantasticus), Amazonia, Ecuador

Mark Moffett / Phantasmal Poison Dart Frog (Epipedobates tricolor) near Cuenca, Ecuador this frog exudes epibatidine, a chemical with analgesic qualities two hundred times as powerful as morphine

Morley Read / Pair of Reticulated poison frogs (Ranitomeya ventrimaculata), Orellana Province, Ecuador.

Morley Read / Pair of Reticulated poison frogs (Ranitomeya ventrimaculata), Orellana Province, Ecuador.

Morley Read / Kingsbury's rocket frog (Allobates kingsburyi) at altitude of 2000m. Paquisha Alta, Cordillera del Condor, Ecuador.

Morley Read / Rio Santiago poison frog (Exidobates captivus) Rio Nangaritza, Ecuador. Occurs only in the western slopes of the Cordillera de Condor in southern Ecuador and northern Peru Vulnerable species.

Morley Read / Confusing rocket frog (Ectopoglossus confusus). Endangered species, individual part of rediscovered population. Population under threat as it lies within a mining concession. Rio Junin, Imbabura Provi...

Morley Read / Espada's rocket frog (Hyloxalus pulchellus) on leaf. Tungurahua Province, Ecuador.

Morley Read / Ecuadorian poison frog (Ameerega bilinguis) on a leaf in the rainforest understory. Yasuni National Park, Ecuador.

Morley Read / Spot-legged poison frog (Ameerega hahneli) male guarding a brood of eggs. When the tadoples hatch they climb onto the fathers back and will be transported to a small pool of water in a bromeliad or pa...

Morley Read / Slow motion clip of an Ecuador poison frog (Ameerega bilinguis) jumping on the rainforest floor, Orellana Province, Ecuador.

Morley Read / Slow motion clip of an Ecuador poison frog (Ameerega bilinguis) jumping on the rainforest floor, Orellana Province, Ecuador.

Morley Read / Ecuador poison frog (Ameerega bilinguis) amongst leaf litter, Amazon rainforest, Orellana Province, Ecuador.

Morley Read / Slow motion clip of an Ecuador poison frog (Ameerega bilinguis) preparing to jump on the rainforest floor, Amazon rainforest, Orellana Province, Ecuador.

Morley Read / Reticulated poison frog (Ranitomeya ventrimaculata), Orellana Province, Ecuadorian Amazon.

Morley Read / Reticulated poison frog (Ranitomeya ventrimaculata), Orellana Province, Ecuadorian Amazon.

Lucas Bustamante / Reticulated poison frog (Ranitomeya ventrimaculata) on leaf, Yasuni National Park, Orellana, Ecuador.

Lucas Bustamante / Little-devil poison frog (Oophaga sylvatica) on leaves, Canande, Esmeraldas, Ecuador.

Lucas Bustamante / Awa rocket frog (Hyloxalus awa) on stem, Rio Silanche, Pichincha, Ecuador, October 2013, Vulnerable species.

Lucas Bustamante / Little-devil poison frog (Oophaga sylvatica) on plant, Canande, Esmeraldas, Ecuador.

Melvin Grey / Poison dart frog (Ameerega hahneli) on rainforest floor, Amazon Basin, Ecuador. June.

Melvin Grey / Darwin Wallace poison frog (Epipedobates darwinwallacei) adult, Mindo, Ecuador. June

Melvin Grey / Anthony's poison dart frog (Epipedobates anthonyi) El Oro Province, Ecuador

Lucas Bustamante / Amazonian poison-frog (Ranitomeya ventrimaculata) tadpoles on male's back, Yasuni National Park, Orellana, Ecuador.

Pete Oxford / Poison arrow frog (Epipedobates darwinwallacei) occurs in Andes of Ecuador and Peru.

Pete Oxford / Phantasmal poison arrow frog (Epipedobates tricolor) captive, occurs in Ecuadorian Andes.

Pete Oxford / Phantasmal poison arrow frog (Epipedobates tricolor) captive, occurs in Ecuadorian Andes.

Pete Oxford / Anthony's poison arrow frog (Epipedobates anthonyi) captive, occurs in dry forests and moist lowlands in Peru and Ecuador.

Pete Oxford / Pichincha poison arrow frog (Oophaga sylvatica) captive, occurs in Colombia and Ecuador.

Pete Oxford / Anthony's poison arrow frog (Epipedobates anthonyi) captive, occurs in Ecuador and Peru.

Pete Oxford / Anthony's poison arrow frog (Epipedobates anthonyi) captive, occurs in Ecuador and Peru.

Pete Oxford / Phantasmal poison arrow frog (Epipedobates tricolor) captive, endemic to Ecuador.

Pete Oxford / Phantasmal poison arrow frog (Epipedobates tricolor) captive, endemic to Ecuador.

Pete Oxford / Phantasmal poison arrow frog (Epipedobates tricolor) captive, endemic to Ecuador.

Pete Oxford / Phantasmal poison arrow frog (Epipedobates tricolor) captive, endemic to Ecuador.

Pete Oxford / Phantasmal poison arrow frog (Epipedobates tricolor) captive, endemic to Ecuador.

Pete Oxford / Phantasmal poison arrow frog (Epipedobates tricolor) captive, endemic to Ecuador.