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

Stephen Dalton / Common frog {Rana temporaria} froglet sitting on lily pad in water, UK

Philippe Clement / Common Frog (Rana temporaria) tadpole with limbs well developed but tail not yet reabsorbed, Belgium, captive

Fabio Liverani / Common tree froglet {Hyla arborea} tadpole with front and back legs, Italy

Willem Kolvoort / Silhouette of immature European edible frog (Rana esculenta) on top of waterlily leaf, tail stump still visible, garden pond, Holland

Juergen Freund / Common frog juvenile (Rana temporaria)

Fabio Liverani / Common tree frog froglet with remains of tail, Italy. Life cycle sequence 5

Duncan Mcewan / Common frog froglet {Rana temporaria} with tail, Scotland UK

Robert Valentic / Eastern sign bearing froglet (Crinia parinsignifera) Australia.

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

Emanuele Biggi / Common frog (Rana temporaria) froglet, Aveto Regional Park, Italy, July.