Cows in the green pastures with Lake Montespluga in the background, Chiavenna Valley, Valtellina, Lombardy, Italy, Europe

Cows graze in the green pastures with the rocky peak Suretta in the background, Chiavenna Valley, Valtellina, Lombardy, Italy, Europe

Clouds over the Rincon Volcano, near Rincon de la Vieja National Park, Gaunacaste, Costa Rica

Black rhino (Diceros bicornis), cow and calf, drinking at night, Okaukuejo waterhole, Etosha National Park, Namibia, Africa

Cow in the fields, Apennines, Umbria, Italy, Europe

Cows at Faulhorn, Grindelwald, Bernese Oberland, Switzerland, Europe

Ritual dancing round cows and bulls before the initiate jumps, Jumping of the Bulls initiation ceremony of the Hamer (Hamar) people, Turmi, Lower Omo Valley, Ethiopia, Africa

Ritual dancing round cows and bulls before the initiate jumps, Jumping of the Bulls initiation ceremony of the Hamer (Hamar) people, Turmi, Lower Omo Valley, Ethiopia, Africa

Ritual dancing round cows and bulls before the initiate jumps, Jumping of the Bulls initiation ceremony of the Hamer (Hamar) people, Turmi, Lower Omo Valley, Ethiopia, Africa

Sheep and obelisk, Welcombe Hills, near Stratford upon Avon, Warwickshire, England, United Kingdom, Europe

A woman in an embroidered hat milking the yak-cow, Yash-Pert Summer Diary in the Hunza area of Pakistan, Asia

Highland cattle, Isle of Mull, Scotland, United Kingdom, Europe

Brown and white cow in alpine meadow, First, Grindelwald, Bern, Switzerland, Europe

Marketplace, Puri, Orissa State, India, Asia

Breeding grazing feed lot, final fattening, resold at each stage, cattle auction, Texas, United States of America, North America

Rowing boat and cow parsley on the shore of Eidfjorden, Eidfjord, Hordaland, Hardanger, Norway, Scandinavia, Europe

Hereford cow grazing on hillside, Chalk Farm, Willingdon, East Sussex, England, United Kingdom, Europe

Highland cow, near Elgol, Isle of Skye, Highland region, Scotland, United Kingdom, Europe

Village in the Marshes, Iraq, Middle East

Peul herder and cattle crossing the River Bani during transhumance, Sofara, Mali, Africa

Hamer Jumping of the Bulls initiation ceremony, naked initiate running over backs of bulls or cows, Turmi, Lower Omo valley, Ethiopia, Africa

Highland cow, Shetland Islands, Scotland, United Kingdom, Europe

Cow and calf by roadside, Polonnaruwa. North Central Province, Sri Lanka, Asia

Highland cattle, Loch Hainort and Red Cuillins (Red Hills), Isle of Skye, Inner Hebrides, Scotland, United Kingdom, Europe

Cattle round-up in high pasture, Lonesome Spur Ranch, Lonesome Spur, Montana, United States of America, North America

Cattle farm on edge of Kalahari Desert, Botswana, Africa

Mangochi beach, Lake Malawi, Malawi, Africa

Swiss cow bells on sale at gift shop in the quaint Engadine Valley village of Guarda, Graubunden, Switzerland, Europe

Farmers at cattle auction in Ennis, County Clare, West of Ireland

Herd of cattle in meadow, The Cotswolds, Oxfordshire, UK

Indian woman comes to collect cow dung from herd of cattle at Jhupidiya Village in Sawai Madhopur, Rajasthan, Northern India

Cattle in pastureland by Maiden Moor in Derwent Fells, Cumbrian mountains near Derwentwater in Lake District National Park, UK

Blonde shaggy coated Highland cow with curved horns on Bodmin Moor, Cornwall

Young brown calves in buttercup meadow, County Clare, West of Ireland

Cattle in shelter in Indian Bishnoi village near Rohet in Rajasthan, Northern India

Neatly-stacked dried cow dung, hand-formed into pats to be used for fuel for cooking, at a farm in Agra, Uttar Pradesh, India

Hungarian Csikos cowboy rounding up cattle on The Great Plain of Hungary at Bugac, Hungary

Indian woman villagers patting cow dung mound for cooking fuel at Kutalpura Village in Rajasthan, Northern India

Cattle crammed tightly together in a pen at cattle auction in Ennis, County Clare, West of Ireland

Bull with cow in meadow in County Clare, West of Ireland

Young brown calves in buttercup meadow, County Clare, West of Ireland

Young brown calf in buttercup meadow, County Clare, West of Ireland

Welsh black cow in valley meadow at Llanfihangel, Snowdonia, Gwynedd, Wales

Brown shaggy coated Highland cow with curved horns on Bodmin Moor, Cornwall

Crowded street scene people, cows, traffic at Sardar Market at Girdikot, Jodhpur, Rajasthan, Northern India

Traditional alpine cattle in the Bavarian Alps, Germany

Egret pecks flies from bull's face among herd of cattle at Jhupidiya Village in Sawai Madhopur, Rajasthan, Northern India

Cattle by old derelict cottage near Cashel, Connemara, County Galway

Neatly-stacked dried cow dung, hand-formed into pats to be used for fuel for cooking, at a farm in Agra, Uttar Pradesh, India

German artisan cheeses on sale at Viktualienmarkt food market in Munich, Bavaria, Germany

Indian woman in sari carrying cow dung pats to dry for cooking fuel at Khore village in Rajasthan, Northern India

Indian village home with dried cow dung for fuel in Sawai Madhopur in Rajasthan, Northern India

Brown and white French Normandy cow with herd of cattle in a meadow in rural Normandy, France

Cows in dry stone wall paddock near Ballinrobe, County Mayo, Ireland

Crowded street scene people, cows, traffic at Sardar Market at Girdikot, Jodhpur, Rajasthan, Northern India

Young brown calf in buttercup meadow, County Clare, West of Ireland

Neatly-stacked dried cow dung, hand-formed into pats to be used for fuel for cooking, at a farm in Agra, Uttar Pradesh, India

Crowded street scene cow roams among people at Sardar Market at Girdikot, Jodhpur, Rajasthan, Northern India

Indian woman villagers patting cow dung mound for cooking fuel at Kutalpura Village in Rajasthan, Northern India

Indian woman villagers drying cow dung for cooking fuel at Kutalpura Village in Rajasthan, Northern India

Brown shaggy coated Highland cow with curved horns on Bodmin Moor, Cornwall

Cattle with The Burren karst landscape behind, County Clare, West of Ireland

Bull among herd of cattle at Jhupidiya Village in Sawai Madhopur, Rajasthan, Northern India

Herd of cattle with calves near Doonbeg, County Clare, West of Ireland

Neatly-stacked dried cow dung, hand-formed into pats to be used for fuel for cooking, at a farm in Agra, Uttar Pradesh, India

Bull mounting cow in herd of cattle by Maiden Moor in Derwent Fells, Cumbrian mountains in Lake District National Park, UK

Charolais cattle on coastal pasture in County Clare, West Coast of Ireland

Herd of cattle by the coast in County Clare, West Coast of Ireland

Indian Hindu men and women bathing and praying in the River Ganges by Kshameshwar Ghat in holy city of Varanasi, India

Highland Cattle in meadow at Ceri (Kerry) Montgomeryshire, Powys, Wales

Local people tend cattle in the Sahara Desert in Upper Volta, now named Burkina Faso

Charolais cattle on coastal pasture in County Clare, West Coast of Ireland

Cattle in shelter in Indian Bishnoi village near Rohet in Rajasthan, Northern India

Traditional alpine cattle in the Bavarian Alps, Germany

Young calves crammed tightly together in a pen at cattle auction in Ennis, County Clare, West of Ireland

Bull tethered with nose ring and chain in with herd of cows in County Clare, West of Ireland

Brown Herefordshire bull and fresian cow in mating process in meadow in Gloucestershire

Black bull with ring through nose in paddock meadow in The Cotswolds, Oxfordshire, England, United Kingdom

Black bull with ring through nose in meadow with cows in The Cotswolds, Oxfordshire, England, United Kingdom

Bull and friesian cow, Oxfordshire, The Cotswolds, United Kingdom

Two people walk past village scene of Oxfordshire cottages and Friesian cows, Swinbrook, The Cotswolds, England, United Kingdom

Bull nuzzles up to cows, Hazleton, Gloucestershire, The Cotswolds, England, United Kingdom

Drought in Burkina Faso (formerly Upper Volta). A white Land Rover 4-wheel drive vehicle drives past a dried out carcass.

Bull scenting cow on a farm near Waiuku on North Island in New Zealand

Drought scene - two men walking past the dried out carcasses of dead cattle in Burkina Faso (formerly Upper Volta)

Cow on a farm near Waiuku on North Island in New Zealand

Freesian bullocks in a beef herd grazing in a field in Helford country, Cornwall, England

Bull scents cow on a farm near Waiuku on North Island in New Zealand

Bryce Rodeo, Bryce, Utah, United States of America, North America

Bryce Rodeo, Bryce, Utah, United States of America, North America

Seated lady wearing traditional clothing (deel) milks cow, Summer dawn, Nomad camp, Gurvanbulag, Bulgan, Northern Mongolia, Central Asia, Asia

Herd of cattle in meadow in the Picos de Europa mountains (Peaks of Europe), Castilla y Leon, Northern Spain, Europe

Proud farmer on the animal market in Niamey, Niger, Africa

The Bernina Express, Viaduct of Brusio, UNESCO World Heritage Site, Lombardy, Italy, Europe

Cattle transhumance, Spain, Europe

Village of Asthall in The Cotswolds, Oxfordshire, England

Fisherman walks past cows cooling off in River Windrush, The Cotswolds, Swinbrook, Oxfordshire, UK

Scene in the bazaar with cow, outside the walls of the 12th century temple dedicated to Lord Jagannath, an embodiment of Krishna, situated in Puri, State of Odisha, India, Asia

Cattle herd in the Torres del Paine National Park, Patagonia, Chile, South America

Farmers at cattle auction in Ennis, County Clare, West of Ireland