The Ferral beast is more easily defeated than you think, simply an iron sword plus a steel sword fairly easily does the trick. Add in a rifle and/or laser rifle and you can finish him off quickly every time.
You know, I thought that, but they seem to get stronger over time. Maybe I'm just imagining that, but without bolas they often seem to be able to take me down. That's even with a spear, both swords and a rifle.
I never use the laser rifle since it's a pain to get energy packs.