Phil Savoie / Red eyed tree frog on heliconia (Agalychnis callidryas)

Piotr Naskrecki / Red-eyed Tree Frog (Agalychnis callidryas), Belize

Ingo Arndt / Red-eyed tree frog (Agalychnis callidryas) eye closed with semi-transparent eyelid that allows it to see its surroundings even while resting, Costa Rica.

Ingo Arndt / Red-eyed Tree Frog (Agalychnis callidryas) close- up of eye half open, the golden webbed semi-transparent eyelid allows to see its surrounding even while resting, Costa Rica.

Ingo Arndt / Close up of foot and eye of Red eyed tree frog {Agalychnis callidryas}

Ingo Arndt / Red eyed tree frog portrait {Agalychnis callidryas} Central America

Nick Garbutt / Female Red-eyed Tree Frog (Agalychnis callidryas) - Caribbean slope race (blue flanks) - obscured in rainforest foliage. Mid-altitude rainforest near Aranal, central Costa Rica.

Nick Hawkins / Red-eyed treefrog (Agalychnis calidryas) Costa Rica, April 2015.

Sean Crane / Red-eyed Tree Frog (Agalychnis callidryas) calling, Tortuguero National Park, Costa Rica

Chris Mattison / Red-eyed leaf frog (Agalychnis callidryas) from Central America

Bence Mate / Head portrait of Red-eyed tree frog (Agalychnis callidryas) at waters edge, with reflection, Santa Rita, Costa Rica

Bence Mate / Head portrait of Red-eyed tree frog (Agalychnis callidryas) Santa Rita, Costa Rica