Why are the wolves of Yellowstone Park disappearing?

The wolves that are brought to the Yellowstone Park are oddly disappearing. I have found that the wolves that are brought to the park roam off and get killed somehow. The park doesn't have fences to indicate where it ends and the wolves don't know that so they wonder into areas where they are unwanted. Most wolves usually would try and find food. That’s where the farmers come in. The farmers have found that the wolves that are outside the park are unprotected so they can kill them before they kill their livestock. So some farmers are the reason, I'm not saying that it's their entire fault, but they do have an impact. I watched a movie and this farmer said that it sometimes gets so bad that he is wants to move far away from the park so his livestock and money won't be ruined by the wolves. I think that that is a good idea. If you are a farmer and you have that same problem I suggest that you move away from the area. Farmers, in the early 1900s, had a major problem with the wolves, so every single one that they saw, they killed. The killing sprees almost lead the wolf population to extinction. Wolves are disappearing from Yellowstone Park. Help save the population, please.