If there are so many herbivorous, the number of food will decrease and other species will die.
If they don’t move, the number of herbivorous in a specific zone will increase.
If they don’t feel threatened, they won’t move in search of a place to take refuge.
Wolves usually hunt herbivorous and omnivorous species. If these species aren’t chased, they won’t feel threatened.
What would happen if there were no wolfs?
