Hair of the dog
Can it be translated? or is there a similar phase in Spanish??
Thanks 
4 Answers
The expression "hair of the dog" has been shorterned from the original "hair of the dog that bit you". It is an English phrase that began from an idea that, if you were bitten by a rabid dog, you would not become infected with rabies if you placed a hair of the dog over the bite wound.
The saying grew to be applied to different types of retribution. It is used most often to refer to the alcohol taken to relieve the effects of an alcohol-induced hangover.
That said, maybe there is a phrase in the culture that conveys a similar idea.
Hope that helps!
Among the Irish and Mexicans, the phrase 'The Cure' ("curarse la cruda", in Spanish) is often used instead of 'hair of the dog'.
It is used, often sarcastically, in the question "Going for a Cure?" In Costa Rica (Central America) the same expression is used but it refers to a pig as in: hair of the same pig ("pelos de la misma chancha" in Spanish) referring to the same method to cure the hangover.
It's in the phrasebook!
How about...
pelo del perro poco que....... hair of the dog that bit you
pelo del perro..... hair of the dog
