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Why are dogs so loyal?
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Bronze statue of samurai Saigo Takamori standing with his dog on a stone pedestal in Ueno Park, Tokyo, with yellow autumn trees in the background.
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Bronze statue of samurai Saigo Takamori standing with his dog on a stone pedestal in Ueno Park, Tokyo, with yellow autumn trees in the background.
A samurai and his loyal dog Statue of Japanese samurai Saigo Takamori and his loyal dog.

Why are dogs so loyal?

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Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree....
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Dogs are loyal due to their evolutionary history, domestication process, and the strong bonds they form with humans. Wolves rely on each other for survival, and this pack behavior has been passed down to dogs, making them naturally inclined to form strong social connections, including with humans.

The domestication of dogs has further enhanced their loyalty. Over thousands of years, humans have selectively bred dogs for traits that include loyalty and companionship. This process has reinforced dogs’ natural social tendencies, as those who were more cooperative and bonded well with humans were more likely to be cared for and survive.

The bond between humans and dogs is another key factor in their loyalty. Dogs are highly social animals and have developed the ability to read human emotions and respond to them. This emotional intelligence allows dogs to bond with humans, often viewing them as part of their pack..

The Editors of Encyclopaedia Britannica