RCMP say a horse, a calf, and four cows were shot in June 2012.
Only two cows survived.
An 18 year old from Stony Plain and a 15 year old from Spruce Grove have been charged with killing or injuring cattle, careless use of a firearm, and mischief over five thousand dollars.
They are both scheduled to appear in court in Stony Plain in March.
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