Emanuele Biggi / Peruvian Tarantula (Pamphobeteus sp.) and Humming Frog (Chiasmocleis royi) together, Los Amigos Biological Station, Madre de Dios, Amazonia, Peru. These species have a commensal relationship. The tara...

Emanuele Biggi / Peruvian Tarantula (Pamphobeteus sp.) adult, walking over Humming Frog (Chiasmocleis royi) without preying on it. Los Amigos Biological Station, Madre de Dios, Amazonia, Peru. These species have a com...

Chien Lee / Spike-browed Frog (Sphenophryne cornuta) father transporting froglets, Digul River, West Papua, Indonesia

Chien Lee / Spike-browed Frog (Sphenophryne cornuta) father transporting froglets, Digul River, West Papua, Indonesia

Piotr Naskrecki / Cross Frog (Oreophryne sp) male protecting his clutch of eggs, Papua New Guinea

Piotr Naskrecki / Cross Frog (Oreophryne sp) male from a newly discovered species protecting his clutch of eggs, Papua New Guinea

Piotr Naskrecki / Cross Frog (Oreophryne sp), newly discovered species, eggs, Papua New Guinea

Alex Hyde / Close up of eye of Tomato frog {Dyscophus antongili} Maroantsetra, Northeast Madagascar

Tim Laman / Rufous-sided sticky frog (Kalophrynus pleurostigma) on the ground in the lowland rainforest, Bako National Park, Sarawak, Borneo, Malaysia

Edwin Giesbers / Warty green burrowing frog (Scaphiophryne marmorata) portrait, Madagascar

Inaki Relanzon / Close up of eye of Tomato frog (Dyscophus antongili) Maroantsetra, Northeast Madagascar

Rolf Nussbaumer / Sheep frog swimming {Hypopachus variolosus} Texas, USA.