If I had enough money, I would rather buy land where wild wolves could live their own life undisturbed by the activity of people. As that is not likely to come to pass, I buy trees instead. There is this organisation in Slovakia, which is buying land in Eastern Slovakia in Cergov mountains and which has build a
private reservation there. By buying a tree, you help buy more land, where the wood is not cut and where animals can live freely and not hunted. Wolves live there too, so although I don't own a wolf, I own a piece of land where it can live its life. I would recommend everybody to find a similar organisation in his/her own country - or any other country and donate some money or efforts in this kind of direction. It is much better for the wolves than trying to own one.