A Hypsiboas crepitans frog is pictured at a terrarium in Caracas November 30, 2015. Venezuelan frogs and toads are in critical danger due to climate change as rising temperatures complicate reproduction and spread a deadly fungus, say scientists, who liken the species to canaries in a coalmine warning of imminent danger. The survival of a group of nearly 20 frog and toad species, which top Venezuela's list of endangered species, may rest on a small group of academics in a Caracas laboratory attempting to recreate the amphibians' natural reproductive conditions. (Photo by Carlos Garcia Rawlins/Reuters)





An Ameerega trivittatus frog is pictured at a terrarium in Caracas November 30, 2015. (Photo by Carlos Garcia Rawlins/Reuters)





A Mannophryne herminae frog is pictured at a terrarium in Caracas November 30, 2015. (Photo by Carlos Garcia Rawlins/Reuters)





Drosophila melanogaster larvae, that will be used as part of the diet for frogs, are seen inside glass containers at the terrarium facilities in Caracas November 30, 2015. (Photo by Carlos Garcia Rawlins/Reuters)





A Trachycephalus venulosus frog is pictured at a terrarium in Caracas November 30, 2015. (Photo by Carlos Garcia Rawlins/Reuters)





A Leptodactylus fuscus frog is pictured at a terrarium in Caracas November 30, 2015. (Photo by Carlos Garcia Rawlins/Reuters)





A Ceratophrys calcarata frog is pictured at a terrarium in Caracas November 30, 2015. (Photo by Carlos Garcia Rawlins/Reuters)





A Rhinella marina toad is pictured at a terrarium in Caracas November 30, 2015. (Photo by Carlos Garcia Rawlins/Reuters)