Google Sasha Siemel, he hunted them in Brazil using a gun a bow and a SPEAR. Pretty big balls. One of the ones he killed was a cattle killer and had killed a vaquero. He said it weighed 440#. I don’t think they are bluffable as a cougar might be.
440#? Yikes. Mountain lions around here are half that size. I did some searching and learned a lot. Totally different type of cat.