Chris Mattison / Close-up of eye of a Giant fire-bellied toad (Bombina maxima), captive, occurs in China

Chris Mattison / Giant fire-bellied toad (Bombina maxima), captive, occurs in China

Barry Mansell / Giant / Cane toad (Rhinella marina) introduced species in South Florida, USA.

Konrad Wothe / Cane toad (Bufo marinus), lowland rainforest, Braulio Carrillo National Park, Costa Rica

MYN / Alfonso Lario / Giant marine toad (Rhinella marina) defensive posture, Gamboa, Panama, November, meetyourneighbours.net project

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

Bert Willaert / Cane / Giant Marine Toad (Rhinella marina / Bufo marinus). Ecuador, South America.

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

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