Companion dog usually describes a dog that does not work, providing only companionship as a pet, rather than usefulness by doing specific tasks.
Many of the toy dog breeds are used only for the pleasure of their company, not as workers, but any dog can be a companion dog, and many working types such as retrievers are enjoyed in North America primarily for their friendly nature as a family pet.
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Editor's Note: This article is not intended to provide medical advice, diagnosis or treatment.
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