Piotr Naskrecki / Painted Reed Frog (Hyperolius marmoratus) being eaten by Fishing Spider (Pisauridae), Gorongosa National Park, Mozambique

Michael D. Kern / Maroon eye / Moon frog (Leptopelis uluguruensis) captive, from East Africa

Alex Hyde / Madagascar reed frog {Heterixalus madagascariensis} in front of waterfall, montane rainforest. Andasibe-Mantadia NP, Eastern Madagascar.

Alex Hyde / Madagascar reed frog {Heterixalus madagascariensis} underside viewed through glass, Masoala Peninsula National Park, north east Madagascar.

Willem Kolvoort / Tadpoles of Common frog (Rana temporaria) amongst reed stems in sand winning pit, Holland

Pete Oxford / Lake Titicaca with local Indian in traditional reed boat and Giant Titicaca frog {Telmatobius culeus} in foreground, captive release, Bolivia

Tony Phelps / Marbled reed frog on reed {Hyperolius marmoratus} Mapumalanga, South Africa

Pete Oxford / Giant Titicaca frog {Telmatobius culeus} and researcher Esther Perez, Lake Titicaca. Boliivia / Peru. Totora reed boat in background. 2002

Piotr Naskrecki / Water Lily Reed Frog (Hyperolius pusillus), Gorongosa National Park, Mozambique

Piotr Naskrecki / Reed Frog (Hyperolius sp), Gorongosa National Park, Mozambique

Nick Upton / Split level view of Common European toad spawn (Bufo bufo) strings wrapped around reed stems in a freshwater pond, Wiltshire, UK, May.

Nick Upton / Split level view of Common European toad spawn (Bufo bufo) strings wrapped around reed stems in a freshwater pond, Wiltshire, UK, May.