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i live in australia and dogs are trained to detect various species of plants, dried matter, spices etc so a mushroom would probably be detected, but then on the other hand you can always claim that this species is used in culinary and has been sent from some exotic country...most likely they will just forfeit that content and send you a letter. regardless if you are ordering anything from the net make sure that in case of the worst case scenario you dont have spliffs lying around the table or a supply of pills for the next party...you never know
In the 70's, people were taking acid to make the world weird. Today, people take Prozac to make it normal.