I tamed one wolf. I ran away with it into the wilderness. Now I just keep gaining hoards of them everytime I walk anywhere. I am not feeding them. I started leaving one sitting in my house and kill the rest, as they seem to duplicate less quickly that way when I leave. I am not feeding/breeding/taming them. I am not even in an area that spawns wild wolves. All the wolves have collars when they populate and obey sit/stand commands without being tamed individually. Ongoing for approx two days.