Parallel
Proverbs 26:11
King James Version (1769 Blayney revision, with Apocrypha) · Berean Standard Bible
As a dog returneth to his vomit, so a fool returneth to his folly (note: Heb. iterateth his folly).
As a dog returns to its vomit (note: Cited in 2 Peter 2:22), so a fool repeats his folly.