Although Compendium of Materia Medica states that fox meat has medicinal value, it also states that fox meat is "slightly toxic". It is not clear whether fox viscera is "toxic". However, no matter what poison it is, it is better not to eat it. The answer added that I was cold. If you feel anything unusual, I suggest you see a doctor immediately. If you always feel good, it is good to supplement the answer, but if there are any questions.