Christophe Courteau / African Buffalo {Sincerus caffer} bull taking a mud bath, Okavango Delta, Botswana.

Christophe Courteau / Two African Buffalo {Sincerus caffer} bulls sparring, Okavango Delta, Botswana.

Tony Heald / African Buffalo, Kruger NP (Syncerus caffer) S. Africa. with Red-bellied Oxpecker bird

Christophe Courteau / Portrait of African Buffalo {Sincerus caffer} bull covered in mud, Okavango Delta, Botswana

George McCarthy / Bison {Bison bison} grazing, Yellowstone NP, Montana, USA

George McCarthy / Bison {Bison bison} Yellowstone NP, Montana, USA

George McCarthy / Large Bison {Bison bison} crossing road in front of car, Yellowstone NP, Montana, USA

George McCarthy / Bison {Bison bison} Yellowstone NP, Montana, USA

DAVID TIPLING / Herd of domestic Water buffalo {Bubalus arnee} at watering hole, Lake Kerkini,

TOM MANGELSEN / African Buffalo, Mala Mala NP (Synercus caffer caffer) S. Africa

Anup Shah / Cape buffalo herd drinking at river {Syncerus caffer caffer} Katavi, Tanzania

TOM MANGELSEN / Bison head portrait covered in snow. (Bison bison) Yellowstone NP.

TOM MANGELSEN / Bison in snow, Wyoming, USA. (Bison bison) Yellowstone NP.

TOM MANGELSEN / Bison in snow, Yellowstone NP, Wyoming, USA.

Richard Du Toit / African buffaloes, males drinking, summer. Mala Mala, South Africa

TOM MANGELSEN / Bison (Bison bison) grazing on hill in snow, Hayden Valley, Yellowstone NP, Wyoming, USA

Bernard Castelein / African buffalo {Syncerus caffer} male feeding, Nakuru, Kenya, East Africa

Artur Tabor / European Bison in Bialowieski NP (Bison bonasus) Winter, Poland

Artur Tabor / European Bison in Bialowieski NP (Bison bonasus) Poland

Tony Heald / Buffalo (Syncerus caffer) in mud, Kruger NP South Africa

Bernard Castelein / African buffalo {Syncerus caffer} male, Nakuru, Kenya, East Africa.

Vivek Menon / Electric fence construction in Mihimuk, Kaziranga National Park, India. Fences are installed to reduce crop damage by elephants, rhinos and buffaloes and to reduce human-animal conflict.

Bernard Castelein / Wild buffaloes drinking in Manas river at dusk Manas NP Assam India {Bubalus arnee}