Lucas Bustamante / Smooth fronted caiman / Crowned dwarf caiman (Paleosuchus trigonatus) baby resting on log, Tambopata, Madre de Dios, Peru.

Lucas Bustamante / Crowned dwarf / Smooth-fronted caiman (Paleosuchus trigonatus) with mouth open, Cuyabeno, Sucumbios, Ecuador.

Lucas Bustamante / Smooth-fronted caiman / Crowned dwarf caiman (Paleosuchus trigonatus) head above water, Cuyabeno, Sucumbios, Ecuador.

Lucas Bustamante / Crowned dwarf caiman (Paleosuchus trigonatus) male resting on a log. Yasuni National Park, Orellana, Ecuador.

Pete Oxford / Schneider's Dwarf Caiman (Paleosuchus trigonatus), Ecuador

MYN / Andrew Snyder / Smooth-fronted caiman (Paleosuchus trigonatus) head, Kanuku Mountains, Guyana. Meetyourneighbours.net project

Piotr Naskrecki / Schneider's Dwarf Caiman (Paleosuchus trigonatus) young in defensive posture, Guyana

Pete Oxford / Smooth-fronted /Schneider's Dwarf Caiman (Paleosuchus trigonatus) on banks of Rewa River, Iwokrama reserve, Guyana

Pete Oxford / Smooth-fronted /Schneider's Dwarf Caiman (Paleosuchus trigonatus) feeding on large fish, Rewa River, Iwokrama reserve, Guyana

Pete Oxford / Smooth-fronted /Schneider's Dwarf Caiman (Paleosuchus trigonatus) on banks of Rewa River, mouth open, Iwokrama reserve, Guyana

Pete Oxford / Smooth-fronted / Schneider's Dwarf Caiman (Paleosuchus trigonatus) on banks of Rewa River, Iwokrama reserve, Guyana

Pete Oxford / Smooth-fronted /Schneider's Dwarf Caiman (Paleosuchus trigonatus) on banks of Rewa River, Iwokrama reserve, Guyana