Kristel Richard / Two rare Shire horses pull a Heineken dray, near a canal, on the streets of Amsterdam, the Netherlands, June 2018.

Kristel Richard / Four rare Jutland horses pull a Carlsberg dray, outside the historical Carlsberg brewery, in Copenhagen, Denmark, June 2016.

Kristel Richard / Four rare Jutland horses pull a Carlsberg dray, outside the historical Carlsberg brewery, in Copenhagen, Denmark, June 2016.

Kristel Richard / Four rare Jutland horses pull a Carlsberg dray, outside the historical Carlsberg brewery, in Copenhagen, Denmark, February 2016.

Kristel Richard / Four rare Jutland horses pull a Carlsberg dray, outside the historical Carlsberg brewery, in Copenhagen, Denmark, February 2016.

Kristel Richard / A Heineken staff member brings a rare Shire horse to his box after driving, at the historical Heineken brewery in Amsterdam, the Netherlands, June 2018.

Kristel Richard / Two rare Shire horses pull a Heineken dray, near a canal, on the streets of Amsterdam, the Netherlands, June 2018.

Francisco Marquez / Carts carrying food, drink and beds to the fields where the horsemen work, rounding up mares and foals. Donana National Park, Spain. June 2014.

Olga Kamenskaya / Reindeer skins on sled in Nenet camp, Nenets Autonomous Okrug, Arctic, Russia, July 2017.

Olga Kamenskaya / Harnessed Reindeer (Rangifer tarandus) pulling Nenet sled, Nenets Autonomous Okrug, Arctic, Russia, July 2017

Olga Kamenskaya / Harnessed Reindeer (Rangifer tarandus), Nenets Autonomous Okrug, Arctic, Russia, July

Olga Kamenskaya / Nenet herdsman with Reindeer (Rangifer tarandus), Nenets Autonomous Okrug, Arctic, Russia, July 2017