Aflo / Two young Japanese wild boars (Sus scrofa leucomystax) sleeping, Ashiya, Hyogo Prefecture, Japan

Aflo / Young Japanese wild boar (Sus scrofa leucomystax) sleeping being sniffed by adult and other baby, Ashiya, Hyogo Prefecture, Japan

Tim Laman / Close up of the snout of a Bearded pig (Sus barbatus) near the Borneo Rainforest Lodge, Danum Valley Conservation Area, Sabah, Borneo, Malaysia

Tim Laman / Head portrait of a Bearded pig (Sus barbatus) from the rainforest of Borneo, near the Borneo Rainforest Lodge. Danum Valley Conservation Area, Sabah, Malaysia

Anup Shah / Warthog and hoglets (Phacochoerus aethiopicus)feeding. Masai Mara National Reserve, Kenya. December

David Noton / Warthog (Phacochoerus aethiopicus) with suckling piglets, Kruger National Park, South Africa

Gerrit Vyn / Collared Peccary (Tayassu tajacu) Willacy County, Texas

Gerrit Vyn / Collared Peccary (Tayassu tajacu) Willacy County, Texas

Sven Zacek / Portrait of a Wild boar (Sus scrofa) in the snow, winter, Estonia.

Sven Zacek / Portrait of a Wild boar (Sus scrofa) in the snow, winter, Estonia.

Sven Zacek / Wild boar (Sus scrofa) in the snow, Winter, Estonia.

Sven Zacek / Wild boar( Sus scrofa) foraging in the snow, Winter, Estonia

Sven Zacek / Wild boar ( Sus scrofa) in the snow, Winter, Estonia.

Philippe Clement / Wild boar (Sus scrofa) sleeping under boulder in forest, Germany

Philippe Clement / Wild boar (Sus scrofa) covered in mud after mud bath in forest, Bavarian Forest, Germany Captive

Philippe Clement / Wild boar (Sus scrofa) sleeping under boulder in forest, Germany

Wild Wonders of Europe / della Ferrera / Turopolje piglets (rare breed) in a Slavonian / Common oak (Quercus robur) and Ash (Fraxinus sp) forest, near Mužilovcica village, Lonjsko Polje Nature Park, Sisack-Moslavina county, Slavonia region,...

Alex Hyde / Hog roast on table, with another roasting on spit. Oxfordshire, UK.

Wild Wonders of Europe / Cairns / Wild boar (Sus scrofa) portrait, Alladale Wilderness Reserve, Scotland, March 2009

Wild Wonders of Europe / Cairns / Wild boar (Sus scrofa) foraging in heather, Alladale Wilderness Reserve, Scotland, March 2009

Wild Wonders of Europe / Cairns / Wild boar (Sus scrofa) portrait, Scotland, Alladale Wilderness Reserve, March 2009

Wild Wonders of Europe / Cairns / Close up portrait of female Wild boar (Sus scrofa) Alladale, Scotland, July 2009

Andy Rouse / Wild boar (Sus scrofa) feeding in woodland, UK

Andy Rouse / Wild boar (Sus scrofa) in woodland, Kent, UK

Wild Wonders of Europe / Smit / Wild boars (Sus scrofa) in light morning mist feeding on swamp plants during in flood plains of the Danube, Gornje Podunavlje Special Nature Reserve, Serbia, June 2009

Jabruson / Bush pigs {Potamochoerus porcus} searching mangoire for nuts, Maya Nord Bai, Odzala NP, Congo

Pete Oxford / White lipped peccaries {Tayassu albirostris} at clay lick in rainforest, Amazonia, Peru

Pete Oxford / Newborn White lipped peccary {Tayassu albirostris} Iwokrama Reserve, Guyana

Andy Rouse / Two African lions (Panthera leo) killing Warthog (Phacochoerus aethiopicus) at waterhole after ambush, South Luangwa, Zambia (non-ex)

Andy Rouse / African lions (Panthera leo) killing Warthog (Phacochoerus aethiopicus) at waterhole after ambush, South Luangwa, Zambia (non-ex)

Andy Rouse / African lions (Panthera leo) killing Warthog (Phacochoerus aethiopicus) at waterhole after ambush, South Luangwa, Zambia (non-ex)

Andy Rouse / African lions (Panthera leo) killing Warthog (Phacochoerus aethiopicus) at waterhole after ambush, South Luangwa, Zambia

Andy Rouse / African lions (Panthera leo) killing Warthog (Phacochoerus aethiopicus) at waterhole after ambush, South Luangwa, Zambia

Tim Laman / A wild boar (Sus scrofa) feeding in Sonneratia mangrove forest at night at low tide. Sundarbans Forest, Khulna Province, Bangladesh.

Tim Laman / A group of Wild boar (Sus scrofa) foraging on the mudflats at the edge of a Sonnneratia mangrove forest, Sundarban Forest, Khulna Province, Bangladesh, April 2006

Tim Laman / Wild boar (Sus scrofa) on the river bank, Nolian Village, Khulna Province, Bangladesh.

Edwin Giesbers / Warthog (Phacochoerus aethiopicus) foraging, Murchison Falls National Park, Uganda

Edwin Giesbers / Warthog (Phacochoerus aethiopicus) portrait, Queen Elizabeth National Park, Uganda

Edwin Giesbers / Warthog (Phacochoerus aethiopicus) portrait, Queen Elizabeth National Park, Uganda

Edwin Giesbers / Warthog (Phacochoerus aethiopicus) foraging, Queen Elizabeth National Park, Uganda

Edwin Giesbers / Warthog (Phacochoerus aethiopicus) close-up of nose, foraging, Queen Elizabeth National Park, Uganda

Edwin Giesbers / Warthog (Phacochoerus aethiopicus) portrait, Queen Elizabeth National Park, Uganda

Tony Heald / Warthog (Phacochoeros aethiopicus) fleeing, Etosha National Park, Namibia, January

Shattil & Rozinski / Collared peccary / Javelina (Tayassu / Peccari tajacu) two adults with young, Lower Rio Grande valley wildlife corridor, Hidalgo County, Texas, USA

Shattil & Rozinski / Young Collared peccary / Javelina (Tayassu / Peccari tajacu) foraging in the dry brush along the Lower Rio Grande Valley wildlife corridor, Texas, USA

Shattil & Rozinski / Young Collared peccary / Javelina (Tayassu / Peccari tajacu) portrait, Lower Rio Grande Valley wildlife corridor, Texas, USA

Nick Upton / Feral pig (Sus scrofa domestica) family gnawing on goat skull, NE Greece.

Suzi Eszterhas / Warthog {Phacochoerus aethiopicus} being chased by African elephant {Loxodonta africanus} Lewa Conservancy, Kenya

Suzi Eszterhas / Warthog {Phacochoerus aethiopicus} Lewa Conservancy, Kenya

Nick Garbutt / Male Babirusa (Babyrousa celebensis) from the Island of Sulawesi, Indonesia. Captive, Singapore Zoo.

Nick Garbutt / Male Babirusa (Babyrousa celebensis) from the Island of Sulawesi, Indonesia. Captive, Singapore Zoo.

Bruno D'Amicis / Bush pig / Red Riverine hog (Potamocherus larvatus) running, Kaffa zone, Southern Ethiopia, East Africa December 2008

Inaki Relanzon / Wild boar (Sus scrofa) in snow, captive, Pyrenees, France.

Juan Carlos Munoz / Bearded pig (Sus barbatus) in rainforest habitat, Danum valley forest reserve, Sabah, Borneo, Malaysia

Suzi Eszterhas / African warthog (Phacochoerus aethiopicus) and piglet, Masai Mara Reserve, Kenya

Mary McDonald / Warthog {Phacochoerus aethiopicus} juvenile running, Masai Mara GR, Kenya

Tony Heald / Bearded Pig {Sus barbatus} foraging on the beach, Bako National Park, Sarawak, Borneo, September 2008

Fabio Liverani / Collared peccary {Tayassu tajacu} in rainforest understorey, Tambopata National Reserve, Amazonia, Peru

Nick Garbutt / Red River Hogs (Potamochoerus porcus) wallowing at Langoue Bai, Ivindo National Park, Gabon, Central Africa.

David Kjaer / Wild Boar (Sus scrofa) male, captive, Scotland

David Kjaer / Wild Boar (Sus scrofa) male boar searching for food at base of tree, captive, Scotland, UK

David Kjaer / Wild Boar (Sus scrofa) male boar, Captive, Scotland, UK

David Kjaer / Wild Boar (Sus scrofa) male boar, captive, Scotland, UK

Jane Burton / Domestic pig {Sus scrofa domestica} sniffing the ground, captive, UK

Jouan & Rius / Warthog (Phacochoerus aethiopicus), Kalahari desert, South Africa

David Welling / Collared Peccary / Javelina (Dicotyles / Pecari / Tayassu tajacu) adult and juvenile, Rio Grande Valley, Texas, USA

David Welling / Collared Peccary / Javelina (Dicotyles / Pecari / Tayassu tajacu) drinking, Rio Grande Valley, Texas, USA

David Welling / Collared Peccary / Javelina Dicotyles / Pecari / Tayassu tajacu) Rio Grande Valley, Texas, USA

David Welling / Collared Peccary / Javelina (Dicotyles / Pecari / Tayassu tajacu) Rio Grande Valley, Texas, USA

David Welling / Collared peccary / Javelina (Dicotyles / Pecari / Tayassu tajacu) adult and juvenile, Rio Grande Valley, Texas, USA

David Welling / Collared Peccary / Javelina (Dicotyles / Pecari / Tayassu tajacu) juvenile, Rio Grande Valley, Texas, USA

David Welling / Collared Peccary / Javelina (Dicotyles / Pecari / Tayassu tajacu) adult and juvenile, Rio Grande Valley, Texas, USA

LYNN M. STONE / Domestic pig {Sus scrofa domestica} close up of snout sniffing the air, USA

Sharon Heald / Warthog {Phacochoerus aethiopicus} suckling young, Etosha NP, Namibia, January

Anup Shah / Warthog {Phacochoerus aethiopicus} female with young on burnt ground, Masai Mara GR, Kenya

Anup Shah / Warthog {Phacochoerus aethiopicus} female suckling young on burnt ground, Masai Mara GR, Kenya

Anup Shah / Warthog family {Phacochoerus aethiopicus} pair with young on burnt ground, Masai Mara GR, Kenya

Hanne & Jens Eriksen / Bearded pig {Sus barbatus} in forest, Kalimantan, Borneo, Indonesia.

Rolf Nussbaumer / Wild boar {Sus scrofa} female with piglets, Austria

Rolf Nussbaumer / Collared Peccary / Javelina {Tayassu tajacu} adult, Rio Grande Valley, Texas, USA, May

Hanne & Jens Eriksen / Bearded pig {Sus barbatus} in muddy water after rain, Kalimantan, Borneo, Indonesia.

George Chan / Wild boar (Sus scrofa) foraging in the forests of Heilongjiang province, north-east China, in winter. January 2007

Fabio Liverani / Wild boar {Sus scrofa} captive, in snow, Bayerischer Wald NP, Germany

Fabio Liverani / Wild boar {Sus scrofa} captive, in snow, Bayerischer Wald NP, Germany

Philippe Clement / Captive Female Wild boar (Sus scrofa) with piglets, foraging in the leaf litter at Wildpark, Bavarian Forest, Germany

Philippe Clement / Juvenile captive Wild boars (Sus scrofa) resting in leaf lietter in beech forest at Wildpark, Bavarian Forest, Germany

Philippe Clement / Family of captive Wild boars (Sus scrofa) sleeping at Wildpark in the Bavarian Forest, Germany

Philippe Clement / Captive Wild boars (Sus scrofa) eating apples at a feeding station at Wildpark in the Bavarian Forest, Germany

Philippe Clement / Family of captive Wild boars (Sus scrofa) sleeping at Wildpark in the Bavarian Forest, Germany

Philippe Clement / Captive Wild boar (Sus scrofa) in autumn beech forest, Wildpark, Bavaria, Germany

Philippe Clement / Group of captive juvenile captive Wild boars (Sus scrofa) sleeping in a beech forest at Wildpark in the Bavarian Forest, Germany

Philippe Clement / Group of captive juvenile captive Wild boars (Sus scrofa) sleeping in a beech forest at Wildpark in the Bavarian Forest, Germany

Philippe Clement / Captive Wild boars (Sus scrofa) in autumn beech forest, Germany

Philippe Clement / Group of captive juvenile captive Wild boars (Sus scrofa) sleeping in a beech forest at Wildpark in the Bavarian Forest, Germany

George Chan / Wild Boar (Sus scrofa) foraging in the snow-covered forests Heilongjiang Province, north-east China, January 2007

George Chan / Wild boar (Sus scrofa) foraging in the forests of Heilongjiang province, north-east China, in winter. January 2007