Who lies down with dogs gets up with fleas.
More Italian Proverbs:
The mouse does not leave the cat's house with a bellyful.Italian
Love demands faith, and faith firmness.
Italian
He who has a mind to beat a dog will easily find a stick.
Italian
Feather by feather the goose is plucked.
Italian
Have two strings to your bow.
Italian
He who wants his dog killed has only to say he's mad.
Italian