A crow doesn’t pick out another crow’s eyes.
More Serbo-Croatian Proverbs:
Those who study will know, those who save will have.Serbo-Croatian
Not all shiny things are golden.
Serbo-Croatian
The early bird catches the first worm.
Serbo-Croatian
The one who can gets two.
Serbo-Croatian
Don't plant pumpkins where they never sprouted.
Serbo-Croatian
Iron is worked when it's still hot.
Serbo-Croatian