Daniel Heuclin / White-lipped / Green tree viper (Cryptelytrops albolabris) captive, from SE Asia

Kim Taylor / Brown-lipped Banded Snail (Cepaea) against a white background. Surrey, UK, April.

Edwin Giesbers / Brown-lipped / Grove / Banded snails (Cepaea nemoralis) on plant stem, Menorca, Balearic Islands, Spain, Europe

Wild Wonders of Europe / Zupanc / White-lipped snail (Cepaea hortensis) on grass, Triglav National Park, Slovenia, June 2009

Steven David Miller / White-lipped / Giant tree frog (Litoria infrafrenata) on palm tree, Cairns, North Queensland, Australia

Tony Phelps / White-Lipped palm viper {Trimeresurus / Cryptelytrops albolabris} captive, from SE Asia

Winfried Wisniewski / Black Rhinoceros (Diceros bicornis) running, Tsavo East National Park, Kenya

Ingo Arndt / White Rhinoceros (Ceratotherium simum) males facing off, Lake Nakuru, Kenya

Ingo Arndt / White Rhinoceros (Ceratotherium simum) mother and juvenile, Lake Nakuru, Kenya

Michael D. Kern / White lipped python snake {Leiopython albertisii} captive, New Guinea

Yva Momatiuk & John Eastcott / White Rhinoceros (Ceratotherium simum) male, Lake Nakuru National Park, Kenya

Michael Pitts / White lipped tree frog {Litoria infrafrenata} Papua New Guinea

Kim Taylor / White lipped banded snail {Cepaea hortensis} portrait.

Mitsuaki Iwago / Black Rhinoceros (Diceros bicornis) with Red-billed Oxpecker (Buphagus erythrorhynchus), Serengeti National Park, Tanzania

Mitsuaki Iwago / Black Rhinoceros (Diceros bicornis) portrait, Ngorongoro Crater, Tanzania

ZSSD / White Rhinoceros (Ceratotherium simum) adult portrait, native to Africa

ZSSD / White Rhinoceros (Ceratotherium simum) adult portrait, native to Africa

ZSSD / Black Rhinoceros (Diceros bicornis) portrait of calf, native to Africa

Konrad Wothe / Black Rhinoceros (Diceros bicornis) mother and calf crossing savannah, Ngorongoro Crater, Tanzania

Mitsuaki Iwago / Black Rhinoceros (Diceros bicornis) portrait, Ngorongoro Crater, Tanzania

Mitsuaki Iwago / Black Rhinoceros (Diceros bicornis) grazing in grassland surrounded by a flock of Cattle Egrets (Bubulcus ibis), Ngorongoro Crater, Tanzania

Mitsuaki Iwago / Black Rhinoceros (Diceros bicornis) with Cattle Egret (Bubulcus ibis) on its back, Ngorongoro Crater, Tanzania

Mitsuaki Iwago / Black Rhinoceros (Diceros bicornis) charging, Serengeti National Park, Tanzania

Mitsuaki Iwago / Black Rhinoceros (Diceros bicornis) mother and baby with Red-billed Oxpeckers (Buphagus erythrorhynchus), Ngorongoro Crater, Tanzania

Gerry Ellis / White Rhinoceros (Ceratotherium simum) mother with baby, Lewa Wildlife Conservancy, Kenya

Gerry Ellis / Black Rhinoceros (Diceros bicornis) portrait, Lewa Wildlife Conservation Area, Kenya

Gerry Ellis / White Rhinoceros (Ceratotherium simum) mother with calf, Lewa Wildlife Conservancy, Kenya

Michael & Patricia Fogden / White-lipped Tree Frog (Litoria infrafrenata) close up of frog sitting in middle of frond, Karunda State Forest, Queensland, Australia

Jim Brandenburg / Black Rhinoceros (Diceros bicornis) portrait, South Africa

Chris Newbert / Rosy-lipped Batfish (Ogcocephalus sp) portrait, 100 feet deep, Cocos Island, Costa Rica

Birgitte Wilms / Rosy-lipped Batfish (Ogcocephalus porrectus), Cocos Island, Costa Rica

Mitsuaki Iwago / Black Rhinoceros (Diceros bicornis) calling in tall grass, Ngorongoro Crater, Tanzania

Jim Brandenburg / Black Rhinoceros (Diceros bicornis) charging, Namibia

Fred Bavendam / Banded Sea Krait (Laticauda colubrina) hunting for small fish on the reef, Manado, North Sulawesi, Indonesia

Tony Phelps / White lipped palm viper in tree {Trimeresurus albolabris} Thailand

PREMAPHOTOS / White lipped snails on moss (Cepaea hortensis) showing variation in pattern on shell within the species, UK.

Dietmar Nill / Fringe lipped bat (Trachops cirrhosus} feeding on frog in cave, Panama

Anup Shah / White lipped tamarin {Saguineus labiatus} native to South America

Dietmar Nill / Fringe lipped bat (Trachiops cirrhosus) taking lizard, Panama

XI ZHINONG / Wild White-Lipped Deer (Przewalskium albirostris)male, Kekexili, Qinghai, Tibetan Plateau, China. Vulnerable species.

XI ZHINONG / Wild White-Lipped Deer (Przewalskium albirostris) male, Kekexili, Qinghai, Tibetan Plateau, China. Vulnerable species.

XI ZHINONG / Wild White-Lipped Deer (Przewalskium albirostris)male, Kekexili, Qinghai, Tibetan Plateau, China. Vulnerable species.

XI ZHINONG / Wild White-Lipped Deer (Przewalskium albirostris)females, Kekexili, Qinghai, Tibetan Plateau, China. Vulnerable species.

Richard Du Toit / White Rhinoceros (Ceratotherium simum) pair feeding near Cattle Egrets (Bubulcus ibis), Rietvlei Nature Reserve, Gauteng, South Africa

Richard Du Toit / White Rhinoceros (Ceratotherium simum) and Cattle Egret (Bubulcus ibis), Rietvlei Nature Reserve, Gauteng, South Africa

Richard Du Toit / White Rhinoceros (Ceratotherium simum) eye, Rietvlei Nature Reserve, Gauteng, South Africa

Richard Du Toit / White Rhinoceros (Ceratotherium simum), Rietvlei Nature Reserve, Gauteng, South Africa

Richard Du Toit / White Rhinoceros (Ceratotherium simum) pair walking, Rietvlei Nature Reserve, Gauteng, South Africa

Richard Du Toit / White Rhinoceros (Ceratotherium simum) males fighting, Rietvlei Nature Reserve, Gauteng, South Africa

Richard Du Toit / White Rhinoceros (Ceratotherium simum) with Cattle Egret perched on back, Rietvlei Nature Reserve, Gauteng, South Africa

Richard Du Toit / White Rhinoceros (Ceratotherium simum) feeding near Cattle Egret (Bubulcus ibis), Rietvlei Nature Reserve, Gauteng, South Africa

Richard Du Toit / White Rhinoceros (Ceratotherium simum), Rietvlei Nature Reserve, Gauteng, South Africa

Piotr Naskrecki / Blue-lipped Tree Lizard (Plica umbra) in threat display, Suriname

Piotr Naskrecki / Fringe-lipped Bat (Trachops cirrhosus), Suriname

Winfried Wisniewski / White Rhinoceros (Ceratotherium simum) male grazing, Lake Nakuru National Park, Kenya

Tim Fitzharris / White Rhinoceros (Ceratotherium simum) grazing with Cattle Egret (Bubulcus ibis), Kenya

XI ZHINONG / Tibetan pika (Ochotona thibetana) outside burrow, Kekexili, Qinghai, Tibetan Plateau, China, December

XI ZHINONG / White-Lipped Deer (Przewalskium albirostris), Kekexili, Qinghai, Tibetan Plateau, China, December

XI ZHINONG / White-Lipped Deer (Przewalskium albirostris), Kekexili, Qinghai, Tibetan Plateau, China, December

Chris Mattison / Herald / Red-lipped Snake (Crotaphopeltis hotamboeia). Near Clanwilliam, Western Cape, South Africa, October.

Winfried Wisniewski / White Rhinoceros (Ceratotherium simum) female with calf, Lake Nakuru, Kenya

Winfried Wisniewski / White Rhinoceros (Ceratotherium simum) female with calf being watched by safari tourists, Lake Nakuru, Kenya

Winfried Wisniewski / White Rhinoceros (Ceratotherium simum) female with calf, Lake Nakuru, Kenya

Mark Carwardine / White-lipped tree viper (Trimeresurus albolabris) captive, from Asia,

Mark Carwardine / White lipped palm viper {Trimeresurus albolabris} captive, from Asia

Mark Carwardine / White lipped palm viper {Trimeresurus albolabris} captive, from Asia

Martha Holmes / Herd of white-lipped peccaries (Tayassu pecari) crossing the Alto Madre de Dios river, Amazon basin. Peru.

Pete Oxford / Black Rhinoceros (Diceros bicornis) slung from Super Huey Bell helicopter for transport to new reserve, Great Fish River Nature Reserve, Eastern Cape, South Africa

Pete Oxford / Black Rhinoceros (Diceros bicornis) slung from Super Huey Bell helicopter for transport to new reserve, Great Fish River Nature Reserve, Eastern Cape, South Africa

Pete Oxford / Black Rhinoceros (Diceros bicornis) lowered to ground from helicopter, Great Fish River Nature Reserve, Eastern Cape, South Africa

Pete Oxford / Black Rhinoceros (Diceros bicornis) sedated for transportation with veterinarian Gavin Shaw removing horn tip, Great Fish River Nature Reserve, Eastern Cape, South Africa

Pete Oxford / Black Rhinoceros (Diceros bicornis) being microchipped before transport to new reserve, Great Fish River Nature Reserve, Eastern Cape, South Africa

Pete Oxford / Black Rhinoceros (Diceros bicornis) slung from Super Huey Bell helicopter for transport to new reserve, Great Fish River Nature Reserve, Eastern Cape, South Africa

Pete Oxford / Black Rhinoceros (Diceros bicornis) slung from Super Huey Bell helicopter for transport to new reserve, Great Fish River Nature Reserve, Eastern Cape, South Africa

Pete Oxford / Black Rhinoceros (Diceros bicornis) being loaded into crate for relocation to new reserve, Great Fish River Nature Reserve, Eastern Cape, South Africa

Pete Oxford / White Rhinoceros (Ceratotherium simum) sedated for transportation with veterinarian Andre Uys inserting micro chip into horn, South Africa

Pete Oxford / White Rhinoceros (Ceratotherium simum) sedated for transportation with veterinarian Kester Vickory measuring horn, South Africa

Pete Oxford / White Rhinoceros (Ceratotherium simum) being loaded for relocation to new reserve, South Africa

Pete Oxford / White Rhinoceros (Ceratotherium simum) being loaded for relocation to new reserve, South Africa

Pete Oxford / White Rhinoceros (Ceratotherium simum) being loaded for relocation to new reserve, South Africa

Pete Oxford / White Rhinoceros (Ceratotherium simum) being loaded into crate for relocation to new reserve, South Africa

Chris Mattison / Ahl's river frog (Phrynobatrachus latifrons), captive, occurs West Africa.

Chris Mattison / Ahl's river frog 1+Phrynobatrachus latifrons+2, captive, occurs in West Africa

Alex Hyde / Brown lipped snail {Cepaea nemoralis} on plant stem, photographed against a white background. Peak District National Park, Derbyshire, UK. April

Nick Upton / Thick-lipped dog whelk (Nassarius incrassatus) exposed on a low spring tide crawling on rocks, near Falmouth, Cornwall, UK, August.

Nick Upton / Thick-lipped dog whelk (Nassarius incrassatus) exposed on a low spring tide, near Falmouth, Cornwall, UK, August.

Nick Upton / Common brittle star (Ophiothrix fragilis) moving over floor of rockpool encrusted with red algae past Flat / Purple Top shell (Gibbula umbilicalis), Rough periwinkle (Littorina saxatilis) and Thick-li...

Michael D. Kern / Green / White-lipped tree viper (Cryptelytrops / Trimeresurus albolabris), captive, from SE Asia

Michael D. Kern / Green / White-lipped tree viper (Cryptelytrops / Trimeresurus albolabris), captive, from SE Asia

Pete Oxford / White-lipped Peccary (Tayassu pecari) group foraging in forest clearing, Yasuni National Park, Amazon Rainforest, Ecuador

Tui De Roy / White Rhinoceros (Ceratotherium simum) mother and calf, Solio Ranch, Kenya

Tui De Roy / White Rhinoceros (Ceratotherium simum), Solio Game Reserve, Kenya

Tui De Roy / White Rhinoceros (Ceratotherium simum) calf, Solio Ranch, Kenya

Tui De Roy / White Rhinoceros (Ceratotherium simum) mother and calf, Solio Ranch, Kenya

Tui De Roy / White Rhinoceros (Ceratotherium simum) mother and calf, Solio Ranch, Kenya