Juan Carlos Munoz / Sign warning people of dogs guarding sheep, Col de la Cayolle, Ubaye Valley / Valle de l'Ubaye, Alpes Haute Provence, Provence, France, July.

Mark MacEwen / Dire Wolf (Canis dirus) skull wall exhibit, at La Brea Tar Pit Museum, LA, USA.

Mark MacEwen / Extinct Dire wolf (Canis dirus) skeleton from Ice Age, at La Brea Tar Pit Museum, LA, USA.

Mark MacEwen / Dire wolf (Canis dirus) skull, extinct from the Ice Age, La Brea Tar Pit Museum, LA, USA.

LYNN M. STONE / Domestic dog, Black Labrador Retriever, portrait amongst roses; La Fox, Illinois, USA (GJ)

LYNN M. STONE / Domestic dog, Chocolate Labrador Retriever sitting by blue garden flowers, La Fox, Illinois (GJ) USA

Eric Baccega / Hunting show with pack of French Tricolore Hounds (Canis familiaris) at the Chateau de la Bourbansais, Brittany, France

Eric Baccega / Olivier de LORGERIL, Comte de la Bourbansais, and his pack of French Tricolore Hound at the Chateau de la Bourbansais, Brittany, France 2007

Eric Baccega / Hunting show with pack of French Tricolore Hounds at the Chateau de la Bourbansais, Brittany, France

Enrique Lopez-Tapia / Large Tibetan mastiff (Canis lupus familiaris), with hairpieces on head to resemble lion, combed for tourists to take pictures. Gangba la Pass (at 4,284m), Tibet, China.

Gabriel Rojo / Wild boar (Sus scrofa) piglet nuzzling a dog, La Pampa province, Patagonia, Argentina. Captive.

Oriol Alamany / Residents of the Aridane valley watching eruption of Cumbre Vieja volcano near their homes, La Palma, Canary Islands, September 2021.