Common Frog (Rana temporaria) resting at water surface, close-up of head and eye, Oxfordshire, UK

animals horizontal frog anura frogs frog temporaria aquatic vertebrate amphibian ectotherms developed country uk ectothermic europe aquatic water amphibians head pond united kingdom close up amphibia zoology developed countries tailless water european ectotherm eye fauna horizontals wildlife frog cold amphibian insectivores insectivora insectivore resting british england europe cold blooded pond uk surface vertebrates britain blooded wetland amphibious wetlands english rana oxfordshire ranidae ponds animal animal