The wolf changes his coat but not his character

Meaning: Surface appearances can change, but a person's fundamental nature remains the same.

Origin: A medieval Latin proverb, lupus pilum mutat, non mentem. The Roman historian Suetonius tells a similar story of the emperor Vespasian, rebuked with the saying that the fox changes his fur but not his habits.

Equivalents in French, Spanish, Japanese, and German

  • French: Le loup change de poil, non de naturel (literally: The wolf changes its coat, not its nature)
  • Spanish: El lobo cambia el pelo, pero no las mañas (literally: The wolf changes its fur but not its tricks)
  • Japanese: 狼は毛を変えても性質は変えない (Ōkami wa ke wo kaete mo seishitsu wa kaenai) (literally: The wolf changes its coat but not its character)
  • German: Der Wolf ändert wohl das Haar, doch bleibt er, wie er war (literally: The wolf may change his hair, but he stays as he was)

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