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

Gerrit Vyn / A lightly oiled Royal Tern (Thalasseus maximus) fledgling on the beach waiting to be fed. The bird was oiled as a result of the BP Deepwater Horizon oil leak in the Gulf of Mexico. Raccoon Island, Ter...

Gerrit Vyn / Royal Tern (Thalasseus maximus) juvenile oiled and waterlogged, as a result of the BP Deepwater Horizon oil leak, drowning in waters adjacent to a nesting colony on Queen Bess Island. Barataria Bay ar...

Gerrit Vyn / Royal Tern (Thalasseus maximus) juvenile oiled and waterlogged, as a result of the BP Deepwater Horizon oil leak, drowning in waters adjacent to a nesting colony on Queen Bess Island. Barataria Bay ar...

Gerrit Vyn / White Ibis (Eudocimus albus) lightly oiled adult foraging. Contaminated as a result of the BP Deepwater Horizon oil leak, in the Gulf of Mexico, Plaquemines Parish, Louisiana, USA, July 2010.

Gerrit Vyn / Brown Pelican (Pelecanus occidentalis) juvenile heavily oiled as a result of the BP Deepwater Horizon leak in the Gulf of Mexico, sitting in mangoves. Raccoon Island, Terrebonne Parish, Louisiana, USA...

Gerrit Vyn / Brown Pelican (Pelecanus occidentalis) juvenile heavily oiled as a result of the BP Deepwater Horizon leak in the Gulf of Mexico, sitting in mangoves. Raccoon Island, Terrebonne Parish, Louisiana, USA...

Gerrit Vyn / Laughing Gull (Leucophaeus atricilla) juvenile, injured by a fishing lure. Harrison County, Mississippi. USA, July.

Gerrit Vyn / Great Blue Heron (Ardea herodias) lightly oiled as a result of the BP Deepwater Horizon oil spill in the Gulf of Mexico. Standing in a coastal marsh. Gulf Islands National Seashore, Florida. USA, June...

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

GEORGETTE DOUWMA / A rescued battery hen. They often lack feathers when they come out of the battery barns. UK.

GEORGETTE DOUWMA / A rescued battery hen. They often lack feathers when they come out of the battery barns. UK.

GEORGETTE DOUWMA / Rescued battery hen. They often lack feathers when they come out of the battery barns. UK.

GEORGETTE DOUWMA / A rescued battery hen. They often lack feathers when they come out of the battery barns. UK.

GEORGETTE DOUWMA / Rescued battery hens with rooster. The chickens often lack feathers when they come out of the battery barns. UK.

GEORGETTE DOUWMA / A rescued battery hen. They often lack feathers when they come out of the battery barns. UK.

GEORGETTE DOUWMA / A rescued battery hen. They often lack feathers when they come out of the battery barns. UK.

GEORGETTE DOUWMA / Rescued battery hen. They often lack feathers when they come out of the battery barns. UK.

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

Tim Laman / Photographer, Christian Ziegler, with his face puffed up on one side from a bee sting to his lip. Bioko Island, Equatorial Guinea, Rapid Assessment Visual Expedition, International League of Conserva...

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

Juergen Freund / Old Ifugao woman with goiter weaving using a back-strapped loom, Banaue Rice Terraces, Philippines. UNESCO World Heritage Site 2008

Dave Bevan / Wlanut gall mite (Eriophyidae spp.) showing damage to upper surface of Walnut leaves (Juglans sp), UK

Dave Bevan / Dutch elm disease caused by the fungus (Ophiostoma novo-ulmi) leaves start to wither in early summer, UK

Anup Shah / Lesser flamingo {Phoeniconaias minor} chick with legs coated in mineral / mud deposits, Lake Nakuru NP, Kenya

Suzi Eszterhas / Cheetah {Acinonyx jubatus} adult female afflicted with skin mange, Maasai Mara Reserve, Kenya

Adrian Davies / Sign warning of Sudden oak death pathogen {Phytophthora ramorum} in botanic garden. UK

Jane Burton / Cherry barb {Barbus titteya} with White spot disease {Ichthyopthirius multifiliis} captive,

Suzi Eszterhas / Californian sealion {Zalophus californianus} being tested with an EEG for the effects of domoic acid poisoning on the brain, Marine Mammal Center, California, USA

Jose B. Ruiz / Spotted redshank {Tringa erithropus} dead near waters edge, Donana NP, Sevilla, Spain

Jabruson / Dead African forest elephant {Loxodonta africana} victim of disease, Odzala NP, Rep of Congo

Anup Shah / Old wounded, male African lion {Panthera leo} moves in to feed on Topi carcass once the main pride has finished feeding, Masai Mara GR, Kenya

Jeff Rotman / Bottlenose dolphin {Tursiops truncatus} swims with sick child and child therapist. Dolphin Reef, Red Sea, Eliat, Israel Model released.

Dietmar Nill / {Yponomeuta sp} moth webs covering bush, Germany

Dietmar Nill / Bat fly {Penicillidia conspicua} amongst bat fur

Pete Oxford / Braconid wasp {Braconidae} covered in parasitic fungal growth {Cordiceps sp} Amazonia, Ecuador

Duncan Mcewan / Parasitic mites on fly (Diptera), Scotland, UK

Juergen Freund / Sick parrot for sale in bird market, Ambon, Indonesia

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

Jane Burton / Yellow Labrador dog, regurgitating food after eating grass.

Suzi Eszterhas / Spotted Hyena {Crocuta crocuta} 2-3 week cub with skin mange peeking out of den, Masai Mara Conservancy, Kenya

Colin Seddon / Vet examining European river otter (Lutra lutra) Somerset, UK

Dan Burton / Starlet coral showing white line disease (Dichocoenia stokesi) USA

Phil Savoie / Colorado potato beetle larvae feeding on potato plant (Leptinotarsa decemlineata) USA

GEORGETTE DOUWMA / Bleached {Acropora sp} coral caused by loss of algae. Maldives.

Peter Scoones / Bleached {Acropora sp} coral caused by loss of algae showing purple polyps. Maldives.

GEORGETTE DOUWMA / Bleached {Acropora sp} coral caused by loss of algae. Maldives.

Doug Wechsler / Foot swollen by edema due to allergic reaction to Leech bites, Philippines

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

Duncan Mcewan / Leaf serpentine mines in Oak leaf (Quercus sp) Scotland, UK

Duncan Mcewan / Leaf miner damage to Silver birch leaf (Betula verrucosa) Scotland, UK

Dan Burton / Wounded Hedgehog being fed {Erinaceus europaeus} Devon, UK

Dan Burton / Wounded Hedgehog being cleaned {Erinaceus europaeus} Devon, UK

Jason Smalley / Jersey cow (Bos taurus) with device to prevent licking infected udders, Scotland, UK

Tony Phelps / Roundworm found insde African Rock python {Python natalensis} South Africa.

Tony Phelps / Roundworm infestation of captive African Rock python {Python natalensis} South Africa.

Richard Du Toit / Leopard {Panthera pardus} female with severe sarcoptic mange licking its skin, MalaMala GR, South Africa

Geoff Simpson / European rabbit {Oryctolagus cuniculus} sick with myxomatosis, Derbyshire, UK.

Peter Bassett / Moulting Southern elephant seal {Mirounga leonina} with runny nose, Dream Island, Antarctic Penninsula.

Jabruson / Male Western lowland gorilla silverback eating soil in bai {Gorilla gorilla gorilla} Odzala NP, Republic of Congo

Colin Seddon / Injured Hedgehog with head caught in food container {Erinaceus europaeus} UK

Steven David Miller / Dead fish at lake edge, suffocated by algal bloom from too many nutrients in water and not enough oxygen, Lake Trafford, Florida, USA

Jabruson / Male Western lowland gorilla (Gorilla gorilla gorilla) feeding in bai, facial scars as result of human disease picked up by wild gorillas, Odzala NP, Democratic Republic of Congo, Central Africa

Anup Shah / Lionesses attack / reject sick male lion {Panthera leo} Masai Mara, Kenya

Chris O'Reilly / Foot and Mouth outbreak 2001. Sign prohibiting access to countryside, Derbyshire, UK.

Jane Burton / Domestic Cat {Felis catus} 3-week, orphan kittens in very poor condition, brought in to rescue.

Juergen Freund / Bleached & healthy coral {Goniopora sp}, Indo-Pacific

Jason Smalley / European rabbit {Oryctolagus cuniculus} scarred by myxamatosis infection, UK.

Anup Shah / Black backed jackal (Canis mesomelas) old and sick, Cape Cross Seal Reserve, Namibia

Anup Shah / Leopard cub sleeping on mother {Panthera pardus} note Tick on cheek, Kenya

Dan Burton / Vet nurse shaves domestic cat before surgery. UK

Kim Taylor / 'Walking dandruff' in dog fur caused by fur mites (Cheyletiella). UK.

Kim Taylor / Three spined stickleback male {Gasterosteus aculeatus} infested with tapeworm, UK

Kim Taylor / Common house fly {Musca domestica} with Chelifer (pseudoscorpion} attached, UK.

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

PREMAPHOTOS / Harlequin beetle female {Acrocinus longimanus} covered in mites. Trinidad

Pete Oxford / Cordyceps killer fungus attacking spider, Manu cloud forest, Peru

Pete Oxford / Palm weevil {Rhynchophorus sp} with ectoparasites. Madre de Dios rainforest, Peru

Duncan Mcewan / Leaf miner larva and excrement seen through Oak leaf {Quercus sp} Scotland, UK

Philippe Clement / Little owl {Athene noctua} being weighed at animal shelter Belgium

Philippe Clement / Little owl {Athene noctua} being treated in animal shelter Belgium

Philippe Clement / Little owl {Athene noctua} being treated in animal shelter Belgium

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

Martha Holmes / Staghorn coral {Acropora cervicornis} bleached by disease or stress, Caribbean.

Elizabeth White / Eastern grey kangaroo {Macropus giganteus} sick with cataracts

Niall Benvie / Sap from Greater celandine {Chelidonium majus} is used to treat warts. Estonia

Peter Scoones / Bleached leather coral caused by loss of algae. Maldives.