The dog that has its bitch in town never barks well.
More Spanish Proverbs:
Whatever way you take there is a league of bad road.Spanish
Dung is no saint, but where it falls it works miracles.
Spanish
Woe to the mule that sees not her master.
Spanish
A peasant will stand on the top of a hill for a very long time with his mouth open before a roast duck will fly in.
Spanish
Know, cabbages, that there is spinach in the stew.
Spanish
A grain does not fill a sieve, but it helps its fellow.
Spanish