Pete Oxford / Cane Toad (Bufo marinus) on riverbank, Essequibo River, Iwokrama Rainforest Reserve, Guyana

Scott Leslie / American Toad (Bufo americanus) calling in spring pond, West Stoney Lake, Nova Scotia, Canada. Sequence 1 of 2

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

ZSSD / Panamanian Golden Frog (Atelopus zeteki) pair in amplexus, native to Panama

Michael & Patricia Fogden / Harlequin Frog (Atelopus varius) displaying colorful warning colors, cloud forest, Costa Rica

Michael & Patricia Fogden / Golden Toad (Bufo periglenes) male, breeding aggregation, extinct, Monteverde Cloud Forest Reserve, Costa Rica

Piotr Naskrecki / Crested Forest Toad (Bufo margaritifer)on rainforest floor, Suriname

Piotr Naskrecki / Crested Forest Toad (Bufo margaritifer), Suriname

Piotr Naskrecki / Smooth-sided Toad (Bufo guttatus) trio hunting termites after the rain, Suriname

Piotr Naskrecki / Smooth-sided Toad (Bufo guttatus), Suriname

Piotr Naskrecki / Beaked Toad (Rhinella lescueri) pair in amplexus, Suriname

Piotr Naskrecki / Beaked Toad (Rhinella lescueri), Suriname

Piotr Naskrecki / Beaked Toad (Rhinella lescueri) pair in amplexus, camouflaged to look like leaf litter, Suriname

Piotr Naskrecki / Beaked Toad (Rhinella lescueri) pair in amplexus, Suriname

Piotr Naskrecki / Pygmy Toad (Dendrophryniscus minutus), Suriname

Thomas Marent / Green Climbing Toad (Bufo coniferus), Piedras Blancas National Park, Costa Rica

Pete Oxford / Crested Forest Toad (Bufo margaritifer), Yasuni National Park, Amazon Rainforest, Ecuador

Pete Oxford / Stinkhorn (Phallaceae) mushroom and Crested Forest Toad (Bufo margaritifer), Yasuni National Park, Amazon Rainforest, Ecuador

Pete Oxford / Crested Forest Toad (Bufo margaritifer) in rainforest, Yasuni National Park, Amazon Rainforest, Ecuador

Thomas Marent / Condoto Stubfoot Toad (Atelopus spurrelli), Utria National Park, Colombia

Thomas Marent / Condoto Stubfoot Toad (Atelopus spurrelli), Utria National Park, Colombia

Thomas Marent / Condoto Stubfoot Toad (Atelopus spurrelli) pair in amplexus, Utria National Park, Colombia

Thomas Marent / Green Climbing Toad (Bufo coniferus) camouflaged on branch, Piedras Blancas National Park, Costa Rica

Pete Oxford / Toad (Bufo sp), Yasuni National Park, Amazon, Ecuador

Pete Oxford / Cane Toad (Bufo marinus), inflated in defensive posture, Yasuni National Park, Amazon, Ecuador

Pete Oxford / Cane Toad (Bufo marinus), Yasuni National Park, Amazon, Ecuador

Piotr Naskrecki / Crested Forest Toad (Bufo margaritifer), Brownsberg Reserve, Surinam

Piotr Naskrecki / Smooth-sided Toad (Bufo guttatus) in rainforest, Sipaliwini, Surinam

Piotr Naskrecki / Crested Forest Toad (Bufo margaritifer) in rainforest, Sipaliwini, Surinam

Pete Oxford / Mongolian Toad (Bufo raddei) pair mating, Eastern Steppe, Mongolia

Pete Oxford / Mongolian Toad (Bufo raddei), Eastern Steppe, Mongolia

Chien Lee / Bornean Rainbow Toad (Ansonia latidisca) camouflaged on tree trunk, species was rediscovered in 2011, Sarawak, Borneo, Malaysia

Chien Lee / Bornean Rainbow Toad (Ansonia latidisca), unseen since 1924 it was rediscovered in 2011, Sarawak, Borneo, Malaysia

Chien Lee / Bornean Rainbow Toad (Ansonia latidisca), unseen since 1924 it was rediscovered in 2011, Sarawak, Borneo, Malaysia

Chien Lee / Four-ridged Toad (Bufo quadriporcatus), Brunei, Borneo, Indonesia

Chien Lee / True Toad (Ansonia sp), Sarawak, Borneo, Malaysia

Chien Lee / Black-spined Toad (Bufo melanostictus), Krabi, Thailand

Piotr Naskrecki / Cane Toad (Bufo marinus), La Selva Biological Research Station, Heredia, Costa Rica

Piotr Naskrecki / Cane Toad (Bufo marinus), La Selva Biological Research Station, Heredia, Costa Rica

Piotr Naskrecki / Cane Toad (Bufo marinus), La Selva Biological Research Station, Heredia, Costa Rica

Christian Ziegler / Toad (Bufo acutirostris) trio camouflaged in leaf litter, Barro Colorado Island, Panama

Christian Ziegler / Toad (Bufo acutirostris), Barro Colorado Island, Panama

Christian Ziegler / Toad (Bufo acutirostris) camouflages as a leaf, Barro Colorado Island, Panama

Christian Ziegler / Toad (Bufo acutirostris) camouflaged on leaf, Barro Colorado Island, Panama

Christian Ziegler / Toad (Bufo acutirostris), Barro Colorado Island, Panama

James Christensen / Cane Toad (Bufo marinus), Mindo, western slope of Andes, Ecuador

Ingo Arndt / Cane Toad (Bufo marinus), Northern Territory, Australia

Chien Lee / True Toad (Pelophryne misera) on moss, Kinabalu National Park, Sabah, Borneo, Malaysia

Chien Lee / Java Tree Toad (Leptophryne borbonica) female, Gunung Penrissen, Sarawak, Borneo, Malaysia

Chien Lee / Long-fingered Slender Toad (Ansonia longidigita), Kubah National Park, Sarawak, Borneo, Malaysia

Chien Lee / Crested Toad (Bufo divergens) camouflaged in leaf litter, Lambir Hills National Park, Malaysia

Chien Lee / Crested Toad (Bufo divergens) camouflaged in leaf litter, Lambir Hills National Park, Malaysia

Chien Lee / Dwarf Slender Toad (Ansonia minuta), Gunung Penrissen, Borneo, Malaysia

Chien Lee / Spiny Slender Toad (Ansonia spinulifer), Gunung Penrissen, Borneo, Malaysia

Chien Lee / True Toad (Pelophryne signata) lives amongst leaf litter on the lowland rainforest floor, Similajau National Park, Malaysia

Thomas Marent / Lesser Toad (Bufo parvus), Forest Research Institute Malaysia, Malaysia

Thomas Marent / Lesser Toad (Bufo parvus), Forest Research Institute Malaysia, Malaysia

Thomas Marent / River Toad (Bufo asper), Gunung Leuser National Park, northern Sumatra, Indonesia

Thomas Marent / Pebas Stubfoot Toad (Atelopus spumarius), Colombia

Thomas Marent / Pebas Stubfoot Toad (Atelopus spumarius) pair in amplexus, Colombia

Thomas Marent / European Toad (Bufo bufo) males fighting to be in amplexus with female, Switzerland

Thomas Marent / European Toad (Bufo bufo) males fighting to be in amplexus with female, Switzerland

Thomas Marent / European Toad (Bufo bufo) males fighting to be in amplexus with female, Switzerland

Thomas Marent / European Toad (Bufo bufo) pair in amplexus, Switzerland

Pete Oxford / Natterjack Toad (Epidalea calamita), Malpartida de Caceres, Extremadura, Spain

Jim Brandenburg / Great Plains Toad (Bufo cognatus) male calling and competing for access to female in amplexus with another male, Touch the Sky Northern Tallgrass Prairie National Wildlife Refuge, southwest Minnesota

Pete Oxford / Smooth-sided Toad (Bufo guttatus), Orinoco River, Apure, Venezuela

Pete Oxford / Pebas Stubfoot Toad (Atelopus spumarius), Mapari River, Rupununi, Guyana

Pete Oxford / Pebas Stubfoot Toad (Atelopus spumarius), Mapari River, Rupununi, Guyana

Pete Oxford / Pebas Stubfoot Toad (Atelopus spumarius), Mapari River, Rupununi, Guyana

Pete Oxford / Cane Toad (Bufo marinus) pair mating, Iwokrama Rainforest Reserve, Guyana

Pete Oxford / Cane Toad (Bufo marinus) pair mating, Iwokrama Rainforest Reserve, Guyana

Pete Oxford / Crested Forest Toad (Bufo margaritifer), Rewa River, Iwokrama Rainforest Reserve, Guyana

Luciano Candisani / Cane Toad (Bufo marinus) in Atlantic Forest, Rio de Janeiro, Brazil

James Christensen / Sapo Limosa (Atelopus limosus) encounter between male toads, loser pressing abdomen against substrate, central Panama

James Christensen / Sapo Limosa (Atelopus limosus) toad male, central Panama

James Christensen / Sapo Limosa (Atelopus limosus) encounter between male toads, loser pressing abdomen against substrate, central Panama

James Christensen / Sapo Limosa (Atelopus limosus) toad males fighting, central Panama

James Christensen / Sapo Limosa (Atelopus limosus) toad male, central Panama

James Christensen / Sapo Limosa (Atelopus limosus) toad male, central Panama

James Christensen / Sapo Limosa (Atelopus limosus) toad pair in amplexus being bitten by midges, central Panama

James Christensen / Leaf Litter Toad (Bufo typhonius) near river, Gamboa, Panama

James Christensen / Leaf Litter Toad (Bufo typhonius) near river, Gamboa, Panama

James Christensen / Leaf Litter Toad (Bufo typhonius) on tree trunk, Gamboa, Panama

Murray Cooper / Toad (Bufo sp) in leaf litter, Amazon, Ecuador

Murray Cooper / Toad (Bufo sp) in leaf litter, Amazon, Ecuador

Suzi Eszterhas / Gulf Coast Toad (Bufo valliceps) in leaf litter, Red Corral Ranch, Texas

Suzi Eszterhas / Gulf Coast Toad (Bufo valliceps) in leaf litter, Red Corral Ranch, Texas

Suzi Eszterhas / Gulf Coast Toad (Bufo valliceps) profile, Red Corral Ranch, Texas

Suzi Eszterhas / Gulf Coast Toad (Bufo valliceps) amid leaf litter, Red Corral Ranch, Texas

Suzi Eszterhas / Gulf Coast Toad (Bufo valliceps) vocalizing, Red Corral Ranch, Texas

Konrad Wothe / Cane Toad (Bufo marinus) in rainforest, Tambopata National Reserve, Peru

Pete Oxford / Natterjack Toad (Epidalea calamita), Sierra de Andujar Natural Park, Andalusia, Spain

Chien Lee / Marbled Tree Toad (Pedostibes rugosus), Hose Mountains, Borneo, Malaysia

Chien Lee / Marbled Tree Toad (Pedostibes rugosus) camouflaged on branch, Hose Mountains, Borneo, Malaysia

Chien Lee / Marbled Tree Toad (Pedostibes rugosus) camouflaged on branch, Hose Mountains, Borneo, Malaysia