<P> `` Man 's best friend '' is a common phrase about domestic dogs , referring to their millennia - long history of close relations , loyalty , and companionship with humans . The first recorded use of a related phrase is by Frederick the Great of Prussia . It was likely popularized by its use in a poem by Ogden Nash and has since become a common colloquialism . </P>
where did the phrase a dog is a man best friend come from
Frederick the Great of Prussia