Pascal Pittorino / Mediterranean tree frog (Hyla meridionalis) resting on a Red rose (Rosa sp) in organic garden, Toulon, Var, Provence, France, May.

Thomas Marent / European Tree Frog (Hyla arborea) calling, Switzerland

Pete Oxford / Chachi Tree Frog (Hypsiboas picturatus), northwest Ecuador

Thomas Marent / Tree Frog (Hyla rubracyla) at night, Colombia

Fabio Liverani / Tree frog {Hyla sp} feeding on grasshopper, Tambopata National Reserve, Amazonia, Peru

Fabio Liverani / Tree frog {Hyla sp} on rim of tropical fungus, Tambopata National Reserve, Amazonia, Peru

Fabio Liverani / Tree frog {Hyla sp} face portrait, Tambopata National Reserve, Amazonia, Peru

Michael Durham / A three year old boy with a Pacific Tree Frog (Pseudacris regilla)

Michael Durham / Pacific Chorus Frog (Pseudacris regilla) jumping into pond, Oregon

Michael & Patricia Fogden / Costa Rica Brook Frog (Duellmanohyla uranochroa) population numbers have been affected by climate change, Costa Rica

Pete Oxford / Strawberry Tree Frog (Hyla pantosticta) male on a bromeliad in the cloud forest, Carchi Province, northeastern Ecuador

Pete Oxford / Cloud Forest Tree Frog (Hyla pellucens) sitting on edge of leaf, Choco Rainforest, northwest Ecuador