Loic Poidevin / European Rabbit (Oryctolagus cuniculus) suffering from myxomatosis. West France, June.

Sumio Harada / Gray Wolf (Canis lupus) diseased with scabies, Yellowstone National Park, Wyoming

Dave Bevan / Rhododendron (Rhododendron sp.) flower spikes showing symptoms of Sudden Oak Death (Phytophthora kernoviae), a fungus-like pathogen.

Anup Shah / Hippopotamus (Hippopotamus amphibius) juvenile with pink skin from rare disease Leucism with resting group, Masai Mara National Reserve, Kenya, September

Anup Shah / Hippopotamus (Hippopotamus amphibius) juvenile with pink skin from rare disease Leucism with resting group, Masai Mara National Reserve, Kenya, September

Dave Watts / Tasmanian Devil (Sarcophilus harrisii) scientists working on devil with cancer (DFTD) Devil Facial Tumour Disease, Cradle Mountain, Tasmania, Australia

Dave Watts / Tasmanian Devil (Sarcophilus harrisii) being released following trapping program for DFTD - Devil Facial Tumour Disease, Cradle Mountain, Tasmania, Australia

Dave Watts / Tasmanian Devil (Sarcophilus harrisii) being released following trapping program for DFTD - Devil Facial Tumour Disease, Cradle Mountain, Tasmania, Australia

Dave Watts / Tasmanian Devil (Sarcophilus harrisii) euthanized by a vet following serious devil cancer - Devil facial tumour disease (DFTD) Cradle Mountain, Tasmania

Dave Watts / Tasmanian Devil (Sarcophilus harrisii) captive creature with facial cancer - Devil facial tumour disease (DFTD) Cradle Mountain, Tasmania

Dave Watts / Tasmanian Devil (Sarcophilus harrisii) captive creature with cancer - Devil facial tumour disease (DFTD) Cradle Mountain, Tasmania

Pete Oxford / Cape Buffalo (Syncerus caffer) veterinary fence to control foot and mouth disease transmission, Moremi Game Reserve, Okavango Delta, Botswana

Jeff Rotman / El Molo child suffering from rickets, caused by a diet consisting primarily of fish. El Molo children suffer from vitamin D deficiency, which develops into the nutritional disease causing deformities...

Daniel Heuclin / Removing Guinea worm (Dracunculus medinensis) from foot - parasitic nematode that causes guinea worm disease in people, Benin.

Daniel Heuclin / Removing Guinea worm (Dracunculus medinensis) from foot of african - parasitic nematode that causes guinea worm disease in people, Benin.

Pete Oxford / Huaorani Indian with splayed feet. Several of the Huaorani have these feet problems and there are some with 6 toes on each foot. Bameno Community, Yasuni National Park, Ecuador, May 2007.

Tony Phelps / Bite from Cape Cobra snake (Naja nivea) on human limb,48 hours after the bite, showng blistering and swelling. Western Cape, South Africa. Model released

Tony Phelps / Bite from Cape Cobra snake (Naja nivea) showing blistering and swelling on human hand 48 hours after the bite. South Africa. Model released

Yva Momatiuk & John Eastcott / Sockeye Salmon (Oncorhynchus nerka) female resting against rocks with skin discolored by fungus and infection, Adams River, Roderick Haig-Brown Provincial Park, British Columbia, Canada

Pete Oxford / Small Tree-Finch (Camarhynchus parvulus) studied for avian pox showing pox growth on foot, highlands of Santa Cruz Island, Galapagos Islands, Ecuador

Pete Oxford / Medium Ground Finch (Geospiza fortis) getting bill length measured, part of avian pox research, Puerto Ayora, Santa Cruz Island, Galapagos Islands, Ecuador

Pete Oxford / Medium Ground Finch (Geospiza fortis) getting blood drawn, part avian pox research, Puerto Ayora, Santa Cruz Island, Galapagos Islands, Ecuador

Pete Oxford / Medium Ground Finch (Geospiza fortis) getting banded, part of avian pox research, Puerto Ayora, Santa Cruz Island, Galapagos Islands, Ecuador

Pete Oxford / Medium Ground Finch (Geospiza fortis) caught in mist net to be studied for avian pox, Puerto Ayora, Santa Cruz Island, Galapagos Islands, Ecuador

Pete Oxford / Medium Ground Finch (Geospiza fortis) caught in mist net to be studied for avian pox, Puerto Ayora, Santa Cruz Island, Galapagos Islands, Ecuador

Pete Oxford / Small Tree-Finch (Camarhynchus parvulus) studied for avian pox showing leg bands, highlands of Santa Cruz Island, Galapagos Islands, Ecuador

Pete Oxford / Small Tree-Finch (Camarhynchus parvulus) studied for avian pox having blood drawn, highlands of Santa Cruz Island, Galapagos Islands, Ecuador

Tui De Roy / Small Ground-Finch (Geospiza fuliginosa) affected by introduced avian pox virus, Galapagos Islands, Ecuador

Pete Oxford / European Rabbit (Oryctolagus cuniculus) infected with myxomatosis, a viral infection that causes blindness and possibly death, Sierra de Andujar Natural Park, Andalusia, Spain

Albert Lleal / Sewage and shacks in Dhaka slum, Bangladesh

Anup Shah / Gelada baboon (Theropithecus gelada) female with chest swelling caused by a parasitic tumour caught from domestic livestock, Simien Mountains National Park, Ethiopia, November

James Christensen / O'Shaughnessy's Anole (Anolis gemmosus) female with a tumor, Andes, Ecuador

Pete Oxford / Man dispensing traditional medicine, Beijing, China 2006

Katherine Feng / Giant Panda (Ailuropoda melanoleuca) researcher taking temperature of sick cub, Wolong Nature Reserve, China

Piotr Naskrecki / Tsetse Fly (Glossina sp) the main vector for trypanosomes, the parasite that causes African sleeping sickness, Guinea, West Africa

Pete Oxford / Ring-tailed Lemur (Lemur catta) afflicted with skin condition (Alopecia) caused by introduced Leucaena tree (Leucaena leucocephala), Berenty Reserve, southern Madagascar

Jane Burton / Tumbu Fly larva recently emerged from beneath the skin of a child's back. Kenya.

Michael Durham / Western Long-eared Myotis (Myotis evotis) bat, biting the finger of a rabies-vaccinated researcher, North America

Michael Durham / Western Long-eared Myotis (Myotis evotis) bat, adult with ear mites, Deschutes National Forest, Oregon

Konrad Wothe / European Rabbit (Oryctolagus cuniculus) infected with myxomatosis, a viral infection that causes blindness and possibly death, Australia

Paul D Stewart / Illustration, carving of Woolly mammoth (Mammuthus primigenius); lithograph of a mammoth carved on mammoth ivory from the Perigord. Published and first announced in 1865 in the 'Annales des Sciences N...

Suzi Eszterhas / Brown-throated Three-toed Sloth (Bradypus variegatus) six month old orphan baby with red hair from treatment for mange weighed by sanctuary worker Claire Trimer, Aviarios Sloth Sanctuary, Costa Rica

Suzi Eszterhas / Brown-throated Three-toed Sloth (Bradypus variegatus) six month old orphaned babies climbing on jungle-gym with red individual treated for mange, Aviarios Sloth Sanctuary, Costa Rica

Suzi Eszterhas / Brown-throated Three-toed Sloth (Bradypus variegatus) six month old orphaned babies climbing on jungle-gym with red individual treated for mange, Aviarios Sloth Sanctuary, Costa Rica

Albert Lleal / Contaminated standing water that causes disease in slums of Dhaka, Bangladesh

Gerry Ellis / African Elephant (Loxodonta africana) orphan called Lalbon, four month old, dying from snake bite, David Sheldrick Wildlife Trust, Tsavo East National Park, Kenya

Gerry Ellis / African Elephant (Loxodonta africana) orphan called Lalbon, four month old with a badly damaged leg after snake bite, David Sheldrick Wildlife Trust, Tsavo East National Park, Kenya

Gerry Ellis / African Elephant (Loxodonta africana) orphan called Lalbon, four month old with badly damaged leg shortly after snake bite, David Sheldrick Wildlife Trust, Tsavo East National Park, Kenya