Here in Northwest Ohio, I know of at least a half dozen caged cougars in a 10 mile radius. Every few years we hear rumors of big cats on the loose. Escapees? Have never heard of a kill. A family I know less than 10 miles away breeds wild cats: cougars, bobcats, caracals, ocelots, margays and more. I've even played with a young tiger at their place. While I have some ethical issues with their hobby/business, I have enjoyed access to these animals. What struck me in this thread was Thomas Linton's suggestion of confrontation with a determined but ordinary sized housecat. My few, brief encounters with the sharp end of cats has left me impressed, though I love cats dearly. Dogs too...Hell! communing with animals is a passion. Having wrestled with a declawed juvinile tiger, I shudder at the thought of defending my soft frail body from such an animal. On the other hand, I've found cats to be easily discouraged by bluster and confidence. The story that circulated here a few years ago [referring to a 60+ year old in Vancouver(?) who killed a mountain lion with a knife] and alot of other literature suggests that not acting like prey[that is to say not moving away from the cat hastily] is the best defense. Eye contact is good. Waving arms to appear larger also good. Tactical retreat sensible. If you just happend to be riding away from the big kitty, innocently, on your nice mountain bike...well, you look like prey. I'm with most of ya'll.....I never go out into the field without a good knife at the very least. You can do a lot with a good blade. There isn't much wilderness in my neighborhood but I'm carrying some force multipliers in the woods whenever I am walking, running, biking, driving or even doing summersalts. Being prepared is a way of life. some folks just don't think that way. What can you do?