When you combine homicidal animals with co-op open-world gameplay, a ton of available vehicle types, and destructible objects, there's bound to be some interesting kill combinations.
If you've run dry of ammo or are having trouble hitting cougars and moose with a bow, you could always just grab a helicopter. Of course, not all of them come with mounted guns, so sometimes you've got to improvise. Crashing the bottom of the helicopter into an animal and dragging it into a building is always a viable option!
Image courtesy of Gamesprout