According to Yellowstone National Park, here are a few ways the wolves have reshaped the park: Deer: It’s true that wolves kill deer, diminishing their population, but wolves also change the deer’s behavior. When threatened by wolves, deer don’t graze as much and move around more, aerating the soil.Click to see full answer. Similarly, you may ask, did wolves change Yellowstone?Yellowstone’s wolves are back, but they haven’t restored the park’s ecosystem. Here’s why. YELLOWSTONE NATIONAL PARK, Wyoming – Yellowstone’s wolves are back, helping revive parts of the ecosystem that changed drastically when this top-of-the-food-chain predator was killed off nearly a century ago.Also Know, was the reintroduction of wolves in Yellowstone successful? In 1872, when Yellowstone was first designated as a national park, there was no legal protection for any of the existing wildlife within it, and over the decades to come, mass culling programs killed thousands of wolves, resulting in what was widely regarded as a successful extirpation (localised extinction) within Additionally, why were the wolves removed from Yellowstone? The creation of the national park did not provide protection for wolves or other predators, and government predator control programs in the first decades of the 1900s essentially helped eliminate the gray wolf from Yellowstone. The last wolves were killed in Yellowstone in 1926.Why wolf reintroduction is bad?(2012) explains that the reintroduced wolves prey primarily on the elk population, and often follow elk migration patterns. Wolf hunting is detrimental to the environment that they were placed into, since the elk populations will not be effectively controlled in the absence of an active wolf population.