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Farmland Green Tree Frog (Rhacophorus arvalis), inflated vocal sac, courtship display, species endemic to Taiwan, Asia

Moor Frog (Rana arvalis) in spawning grounds at sunset, Middle Elbe Biosphere Reserve near Dessau, Saxony-Anhalt, Germany, Europe

Farmland Green Tree Frog (Rhacophorus arvalis), inflated vocal sac, courtship display, species endemic to Taiwan

Moor Frogs (Rana arvalis) during mating, Middle Elbe Biosphere Reserve near Dessau, Saxony-Anhalt, Germany, Europe

Moor frog (Rana arvalis), male in the spawning grounds, Mittlere Elbe biosphere reserve on the Elbe river near Dessau, Saxony-Anhalt, Germany, Europe

Farmland Green Tree Frog (Rhacophorus arvalis), inflated vocal sac, courtship display, species endemic to Taiwan, Asia

Moor Frogs (Rana arvalis) during mating, Middle Elbe Biosphere Reserve near Dessau, Saxony-Anhalt, Germany, Europe

Stoat (Mustela erminea), in winter fur on a snow-covered meadow with field mouse (Microtus arvalis) in the catch, Swabian Alb biosphere reserve, Baden-Wuerttemberg, Germany, Europe

Moor frog (Rana arvalis) male, blue coloured during mating season, with spawn in spawning waters, Thuringia, Germany, Europe