“Humans’ Best Friend” – The Dog

Our companion for thousands of years 


The dog, a mammal that goes by the scientific name Canis lupus familiaris, is a subspecies of the grey wolf (Canis lupus). Together with the cat, the dog is one of the most popular pets worldwide. Evidence shows that dogs have lived with us humans for more than 14,000 years. At first, they were primarily our hunting partners, companions and protectors. Later, however, in many parts of the world, they also became our friends, family members, partner substitutes and comforters.


Fossil finds in North America, Europe and Asia indicate that about 60 million years ago there lived a species of carnivore that resembled a weasel, with the scientific name Miacis. About 30 to 40 million years ago it evolved into the Cynodictis (Greek = “slender dog marten”), an animal that looked rather more dog-like. Two branches descended from it, one in Africa and the other in Eurasia. The latter is known by the scientific name Tomarctus and is considered to be the progenitor of wolves and subsequently dogs. It lived about 15 million years ago.


It is still not completely known where and how often dogs were domesticated or who domesticated them. However, it is thought that dogs began to domesticate themselves by following humans so they could feed on the remains of their prey. According to a new study published in the scientific journal PNAS, this process started about 23,000 years ago in Siberia.

Role in human society

Dogs have played an important role in human society for a very long time, and the canine-human relationship is still thriving in many forms in the present day. For early hunter-gatherers, dogs were hunting companions and bodyguards against predators. With the domestication of farm animals, dogs took over tasks such as herding and acting as guard dogs, protecting farmers’ goats and sheep. Today, while they continue to perform these tasks in some places, they are also utilised in many other fields.

  • They support the police and customs, using their ability to locate people and sniff out illegal substances.
  • They help patients to recover through animal-assisted therapy.
  • They guide their blind or visually impaired owners safely through their surroundings.
  • They bring joy to residents on their visits to nursing homes.
  • And they give strength and comfort to their owners as emotional support animals.

This is particularly the case in the Western world. Elsewhere – especially in some Asian countries – dogs are also considered a source of meat for consumption.

Dogs in science

Although dogs have played a major role in people’s lives for thousands of years, for a long time little scientific attention was paid to dog. As the scientific article The New Era of Canine Science: Reshaping Our Relationships With Dogs points out, this has only changed in the last two decades: canine research is now rapidly becoming an established, influential and highly interdisciplinary field. More and more centres are emerging around the world dedicated to the study of dogs and their interactions with humans. Areas of interest include understanding the origins, behaviour and cognition of dogs, recognising the value of dogs as a unique biological model.

Thanks to this recent development, science is now able to confirm how important dogs are in human society and how essential it is to prioritise the welfare of these animals. As a consequence, we see a better awareness of dogs and their needs, as well as a move to tackle animal welfare problems such as abandonment, poor nutrition, insufficient exercise and lack of veterinary checks, which sadly are still all too common.


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