DPris, Now there are some interesting ponderances! I've watched quite a number of nature documentaries, and I can't really recall anything terribly large which might be inclined to gnaw upon my person. If it's something I already own, then my P10 will do. If I can have a shopping list before I go, then I suppose the Sig 320 and it's large capacity will get the nod.
As far as headgear- I first thought about the pith helmet. But then it seems I've seen more folks in jungly places wearing pith helmets who were also wearing shorts. I'm sure that worked fine for the Brits, but I'd rather not fall afoul of any jungle dress codes. I think I'd to the fedora.