Robert Valentic / Spotted Marsh Frog (Limnodynastes tasmaniensis) male, Melbourne, Australia, urban wildlife, late winter Controlled conditions

Robert Valentic / European marsh frog (Pelophylax ridibundus) sub-adult from a small brook, Dadia Forest, NE Greece, July. Controlled conditions.

Melvin Grey / Marsh Frog (Pelophylax ridibundus) adult at edge of small, open lake in public park, hiding amongst 'blanket weed', with small fish. Kresna Area, Bulgaria

Robert Valentic / Lesuer's Tree Frog (Litoria lesuerii) female from the Lerderderg River near Bacchus Marsh in western Victoria, Australia.

Robert Valentic / Eastern sign-bearing froglet (Crinia signifera) near stream, Bacchus Marsh, Melbourne, Victoria, Australia. May.

David Perpinan / Western marsh frog (Pelophylax perezi) in a pond, Cuenca, Castile-La Mancha, Spain, August.

Jean E. Roche / European pond turtle (Emys orbicularis) feeding on tadpole of Mediterranean tree frog (Rana meridionalis) Camargue, France. June.

Jean E. Roche / Pond turtle (Emys orbicularis) feeding on European tree frog (Rana meridionalis) tadpole Camargue, France, June.

Paul Harcourt Davies / Frog orchid (Coeloglossum viride) flower, Mt Terminillo, Lazio, Italy, July.

Adrian Davies / Perez's Frog (Pelophylax perezi) on water lily pad, Madeira.

Will Watson / Marsh Frog (Pelophylax ridibundus) basking on Bur-reed (Sparganium sp.) leaves, flood-plain pool, Stare Okopy, Poland.

Cyril Ruoso / Marsh frog (Pelophylax / Rana ridibundus) breeding season interaction between males. Burgundy, France, May.