Ingo Arndt / Close up of webbed foot of African clawed frog {Xenopus laevis}

Ingo Arndt / Close up of foot and eye of Red eyed tree frog {Agalychnis callidryas}

Ingo Arndt / Red eyed tree frog portrait {Agalychnis callidryas} Central America

Ingo Arndt / European edible frog eyes showing above water {Rana esculenta} Germany

Ingo Arndt / Blue poison arrow frogs {Dendrobates azureus} South America

Ingo Arndt / Natterjack toads, mating pair with strings of toad spawn {Bufo calamita} Germany

Ingo Arndt / Natterjack toad male calling {Bufo calamita} vocal sac inflated, Germany

Ingo Arndt / Common frog on lily pad {Rana temporaria} Germany

Ingo Arndt / European edible frog half submerged in water {Rana esculenta} Germany

Ingo Arndt / European edible frog {Rana esculenta} hidden amongst pondweed Germany

Ingo Arndt / Yellow bellied toad {Bombina variegata} Germany

Ingo Arndt / Natterjack toad {Bufo calamita} portrait Germany