The trees and the wolf model component is same or from these models. https://www.cgtrader.com/3d-models/plant/conifer/realistic-trees-for-game-assets-or-fields-for-environtment https://www.cgtrader.com/3d-models/animals/other/lowpoly-wolfs-with-wolf-rigging-ready-to
I create these trees in Blender using add-ons or internal lugins of the Blender software. For the wolf is same i create it in blender with lowpoly technic.