When two dogs fight for a bone, the third runs away with it.
More Dutch Proverbs:
He that can reply to an angry man is too hard for him.Dutch
When the cat's away, it is jubilee with the mice.
Dutch
Who undertakes many things at once seldom does anything well.
Dutch
The nobler the tree, the more pliant the twig.
Dutch
More flies are caught with a spoonful of syrup than with a barrel full of vinegar.
Dutch
Every flood has its ebb.
Dutch