Christian Ziegler / Red-eyed Tree Frog (Agalychnis callidryas) being consumed by Foam-nest Frog (Leptodactylus sp), Soberania National Park, Panama

Michael & Patricia Fogden / Grey Tree Frog (Chiromantis xerampelina) group foam nesting over seasonal pond, South Africa

Christian Ziegler / Foam-nest Frog (Leptodactylus sp) feeding on a Red-eyed Tree Frog (Agalychnis callidryas) at a mating pond, Soberania National Park, Panama

Michael & Patricia Fogden / Smokey Jungle Frog (Leptodactylus pentadactylus) tadpoles eating eggs of Tarraco Treefrog (Smilisca phaeota) in rainforest, Costa Rica

Piotr Naskrecki / Grey Tree Frog (Chiromantis xerampelina) foam nests, Gorongosa National Park, Mozambique

Pete Oxford / Grey Tree Frog (Chiromantis xerampelina) with foam nest, Marakele National Park, Limpopo, South Africa

Emanuele Biggi / Grey foam-nest tree frog (Chiromantis xerampelina) sitting in hotel room, Zambia.

Emanuele Biggi / Grey foam-nest tree frog (Chiromantis xerampelina) sat on tree trunk, South Luangwa National Park, Zambia.