Wolves do not eat each other.
More French Proverbs:
Horse, don't die yet, grass is coming.French
The while we keep a man waiting, he reflects on our shortcomings.
French
There are more old drunkards than old doctors.
French
Incense intoxicates and every one wishes for it.
French
Young saints, old devils.
French
Even the tiniest little chapel has its saint.
French