once bitten, twice shy
- a burnt child dreads the fire
- the burnt child dreads the fire
- A beaten dog may cower before a friendly hand.
- Bitten by a snake on one morning, afraid of the rope by the well for ten years.
one is cautious in the future if hurt in the past
- Gregory Y. Titelman, Random House Dictionary of Popular Proverbs and Sayings, 1996, ↑ISBN, p. 261.