Good question. For me kind of depends on circumstances.
Never been too buggered in NA. But, water moccasins suspended on limbs over a swamp comes to mind
Tent in griz/brown bear country creates all kinds of imaginary fears at night. Large canister of bear spray plus short barreled shot gun/adequate rifle, properly loaded, does help the psyche.
^^Most of that is self inflicted fear. Seriously, I think stumbling into a cow elephant with an attitude comes closest to real deal danger that I would prefer to avoid. And, dinking around water with large crocs who don’t need an excuse, other than hunger, to grab you and eat you.