I don't know about Canada, but I do know from a whole lot of experience that if you shoot an animal with no witnesses and the bullet exits and most importantly you do not approach the animal or talk about it you are home free. Doesn't matter if it's on your property. Just tell them "I don't want to talk about it". Next tell them if that is their bear or cougar or whatever to get it off your place.
That would apply to a large number of crimes, but alas most people can’t.
