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 / 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.

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

MYN / JP Lawrence / Pale-striped poison frog (Ameerega hahneli) San Jose de Payamino, Ecuador. Meetyourneighbours.net project

MYN / JP Lawrence / Frog (Hyloxalus) San Jose de Payamino, Ecuador Meetyourneighbours.net project

MYN / JP Lawrence / Frog (Hyloxalus) San Jose de Payamino, Ecuador Meetyourneighbours.net project

MYN / JP Lawrence / Frog (Hyloxalus sauli) San Jose de Payamino, Ecuador Meetyourneighbours.net project

MYN / JP Lawrence / Ecuador poison frog (Amereega bilinguis) San Jose de Payamino, Ecuador. Meetyourneighbours.net project

Chris Mattison / Phantasmal Poison Dart Frog (Epipedobates tricolor) portrait, captive, endemic to Ecuador. Endangered species.

Chris Mattison / Phantasmal poison dart frog (Epipedobates tricolor) on white background, captive endemic to Ecuador. Endangered species.