A burnt child fears the fire, and a bitten child fears a dog.
More Danish Proverbs:
When the host smiles most blandly he has an eye to the guest's purse.Danish
It is not easy to sting a bear with a straw.
Danish
After pleasant scratching comes unpleasant smarting.
Danish
He fears the sack who has been in it.
Danish
It is easy to find the rod when another finds the bottom.
Danish
The generous man grows rich in giving, the miser poor in taking.
Danish