Technical name is Puma concolor but known variously as cougar, puma, mountain lion, or panther
The signs in our local parks say that if you meet one of these while hiking, you should make yourself look as big as possible - and under no circumstances should you run.
Furthermore, if attacked, you should fight back.
Gee -thanks for that advice.
My own advice is to always hike with a companion who cannot run as fast as you can.