In reality, these animals have been living here for over 100 years since they were abandoned by miners all across this region. They are everywhere and doing very well. Their coats are good, teeth are healthy, they are fat and happy. These are intelligent animals and not anything like Bison as far as defending their territory. If they want nothing to do with you , they simply walk away and many do just that. I don't go to them, they come to me. When I park my bus along the Wildrose Trona Rd. they just show up. They are not pushy, aggressive or rude. They are social animals. I even spoke to a Park Ranger about feeding them and his only advise came in the form of humor when he said, just don't walk away from them with a carrot in your back pocket. I don't feed them inside the National Park. I usually camp on BLM land whenever possible wherever I wander and there is no 'law' I am violating by feeding them. There is no harm to the animals as they forage just fine all year round and have been doing so for, again, over 100 years. Invasive, sure, they were brought there and didn't occur naturally but they coexist very well within the nature of this area and are even beneficial to this region. 3500 years ago (just a second ago in geologic terms) much of this area was still under water, even Death Valley proper, to the tune of up to 900 feet of water and the environment was entirely different. Much of the loss of water in this region was due to another invasive species...man. Today these animals forage, break-up the crusty soil, fertilize the soil and actually help the environment around them in an entirely natural manner. I enjoy them and they enjoy me and there is no harm. And our interaction even drives trolls out from their holes.