Bert Willaert,Bert Willaert / Chile Four-eyed Frog (Pleurodema thaul) showing how it got its name - eye spots on the back of it's body, Chile, December,. Controlled conditions,

Chris Mattison / Bug-eyed frogs (Theloderma) four different species : Vietnamese mossy frog (Theloderma corticale) Chapa bug-eyed frog (Theloderma bicolor), Pied warty frog (Theloderma asperum) and Chantaburi warted...

Bert Willaert / Researcher releasing a Marbled four eyed frog (Pleurodema marmoratum) together with some local children, Andes, Bolivia, October 2013.

Bert Willaert / Researcher showing a Marbled four eyed frog (Pleurodema marmoratum) to some local children, Andes, Bolivia, October 2013.

Bert Willaert / Marbled four eyed frog (Pleurodema marmoratum) portrait, Bolivia, October.

MYN / Andrew Snyder / Colombian four-eyed frog (Pleurodema brachyops) Yupukari, Guyana. Meetyourneighbours.net project

Bert Willaert / Chile Four-eyed Frog (Pleurodema thaul) in amplexus, Chile, December

Bert Willaert / Chile Four-eyed Frog (Pleurodema thaul) Chile, December

Bert Willaert / Chile Four-eyed Frog (Pleurodema thaul) Chile, December

Christian Ziegler / Red-eyed Tree Frog (Agalychnis callidryas) egg mass with four day old embryos, Soberania National Park, Panama

Barry Mansell / Colombian four eyed frog (Pleurodema brachyops) on moss, captive, from South America

Barry Mansell / Colombian four eyed frog (Pleurodema brachyops) on moss, captive, from South America