12 or so years ago on the OLD Traveller Mailing list, I posted an idea of having the Vargr being susceptible to Chocolate. It was pointed out to me that the Vargr wouldn't being as susceptible to Chocolate as dogs are due to brain size differences, but you could always account for the addictive and narcotic effects by biological changes brought about by the ancients genetic uplift of the Vargr.
In any case, having a substance that one race thinks is candy, and for another alien race, its a dangerous, destructive highly addictive substance
is an interesting plot device. Also you get to have agents. thugs and chocolate smugglers of such dangerous, murderous cartels such as the Hersey Mob, the Mother See's cartel, the Ghiradelli drug family...its enougth to send shivers down your spine...dealing with such criminal thugs...
You also get to have brave and/or corrupt agents of the Chocolate Interdiction Task Forces of the various Vargr states and worlds, trying to stem the tide of chocolate addiction brought in from Imperial space, by humans eager for profit irregardless to the cost to the youth of Vargr worlds.
Just an idea... :roll: