A pear tree cannot bear an apple.
More Serbo-Croatian Proverbs:
A pan was mocking a pot because his mouth is big.Serbo-Croatian
Not all shiny things are golden.
Serbo-Croatian
A sparrow in the hand is better then a pigeon on the branch.
Serbo-Croatian
The first thing that God created was his own beard.
Serbo-Croatian
Who sows wind will harvest storm.
Serbo-Croatian