I have made some research and problem with risks of feeding animals to other animals is a much different problem than prion diseases. Eating other animals is th

I have made some research and problem with risks of feeding animals to other animals is a much different problem than prion diseases. Eating other animals is the key factor for transmission of prions, not producing them. Misfolded prion can be formed anywhere. Just not feeding animals to animals won't prevent it, it will reduce impact. But that was true for millions of years, whats different here?