Late last month the officers examined a courier shipment of crafts from Uganda that were destined for Saskatoon.
A close examination revealed 65 grams of heroin inside a black wooden statue of a gorilla.
The investigation continues and so far no one has been charged.
The border agency says it has made 55 drug seizures in Calgary so far this year.
The list includes heroin, opium, steroids and safrole, a chemical used in the production of ecstasy.