What is the meaning if 'every dog has his day'?

Answer 1

EVERY DOG HAS HIS DAY - "According to the medieval Dutch scholar Erasmus, the saying came about as a result of the death of the Greek playwright Euripides, who in 405 B.C. was mauled and killed by a pack of dogs loosed upon him by a rival. Thus the saying is usually taken to mean that even the most lowly person will at some time get revenge on his oppressor, no matter how powerful the man may be. The Greek biographer Plutarch recorded the proverb for the first time in 'Moralia' (A.D. c. 95) rendering it as 'Even a dog gets his revenge,' and Richard Taverner included the first version in English - 'A dogge hath a day' - centuries later in his 'Proverbes' or Adages' (1539).What was virtually the modern form appeared in John Ray's 'A collection of English Proverbs' (1670) as 'Every dog hath his day'." From "Wise Words and Wives' Tales: The Origins, Meanings and Time-Honored Wisdom of Proverbs and Folk Sayings Olde and New" by Stuart Flexner and Doris Flexner (Avon Books, New York, 1993).