JACKSON, Wyo. — The parasite Toxoplasma gondii (T. gondii) is present in Yellowstone National Park (YNP) and can spread to both canines and humans. According to a 2022 research article, 51.6 percent of the 62 YNP mountain lions tested positive for T. gondi antibodies, meaning that those animals have been exposed to the parasite. The […]









