Inside Yellowstone - Wolf Cascade. Wolves are are inextricably linked to many other animal and plant species. The trophic cascade of effects caused by their reintroduction is being studied. Duration: 2 minute 03 seconds. What's the difference between a coyote and a wolf? Those of us who love domestic dogs also find these two canids fascinating. Duration: 2 minute 14 seconds. Duration:2 minutes, 3 seconds.