ProverbWisdomEnglish origin

An old dog barks not in vain.

Meaning: Experience earns credibility; when veterans finally speak, their warnings deserve serious attention.

Origin: Recorded in A Dictionary of English Proverbs and Proverbial Phrases, an undated collection published in London by Whittaker & Co. around 1880 and credited to Thomas Preston. Its earlier history hasn't been traced.

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