Yes from what I've read, similar to bears, mountain lions can also carry the "Trichinella" parasite which can result in the disease Trichinosis, from ingesting the living parasite. From what I've learned, freezing the meat at 5 degrees or colder for a few weeks will kill the parasite, and so will cooking it thoroughly above 160F. I think it's more rare to occur in lions but I'm not taking any chances. So we didn't make any steaks since they'd be cooked med-rare, and instead just roasts which we cook all day, and the sausage and brats which we'll cook at high temps.