San Jose Glass Frog (Cochranella euknemos), family Centrolenidae, Nuqui, Colombia
photograph by Pipe Jurubira
seen from Germany
seen from United States

seen from United States
seen from China

seen from United States
seen from Saudi Arabia
seen from United Kingdom

seen from Germany
seen from China

seen from United States

seen from Saudi Arabia

seen from Germany

seen from United States
seen from Poland

seen from Brazil
seen from Germany
seen from China

seen from United States
seen from Russia
seen from Ireland
San Jose Glass Frog (Cochranella euknemos), family Centrolenidae, Nuqui, Colombia
photograph by Pipe Jurubira
Atrato Glass Frog / Sun Glassfrog photographed by nuqui_herping
Hoppy New Year: The glass frogs' combination of an opaque green back and translucent underside act as camouflage, breaking up the outline of the body to make it harder to spot in the leaves. When resting, most of their blood is concealed in the liver to make the frog even harder to see.
San Jose Cochran Frog
The eggs of a Rio Azule glass frog (Hyalinobatrachium pellucidum) underneath a leaf in the Rio Bigal Reserve, Ecuador
by Anton
Which frog is well-dressed but well-armed as well?
Personally I have huge respect for someone who commits to a suit that is all one colour, and centrolenid frogs (glass frogs) commit pretty hard to that style, though with occasional polka-dots for good measure. But don't let their high fashion fool you. They are very well armed—at least for battles with each other. Many glass frogs possess fearsome humeral spines; sharp extensions of the upper arm.
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So they're pretty literally well-armed.
Glass Frog vs Wasp
Hyalinobatrachium aureoguttatum