When the feed box is empty, the horses bite each other.
More Danish Proverbs:
The flitch hangs never so high but a dog will look out for the bone.Danish
It is as cheap sitting as standing.
Danish
Beware of the dog himself, his shadow does not bite.
Danish
Many people love to praise right and do wrong.
Danish
Many a man is a good friend but a bad neighbour.
Danish
The foot of the farmer manures the field.
Danish