As a result, it has launched a campaign warning people of the trouble released pets can cause - even if they have already gone to the big goldfish pond in the sky. "Even if the fish are dead, they could have diseases or parasites that could be introduced, especially if the water treatment system is not top notch," Ms Wilson tells Fort McMurray Today . The campaign will also target pet stores and markets, as well as groups that engage in "mercy releases", where captive animals are set free in the belief it will create spiritual "good karma", CBC News says.