Pesky bugs
Well there is a high risk of animal attacks in the woods, unfortunately, the type of animal I am thinking can not be fought off with a knife no matter how much you might like to try. I'm speaking of course of tiny little animals. Flies, mosquitoes, ticks, and mites are one of the unpleasant parts of the woods but there are ways to keep them off.
Chiggers will ruin your life, let alone your trip. Chiggers bites are the single most relentless unpleasant intensely itchy things on the planet. You can't imagine the itch, it could seriously trigger PTSD. This is one that your folding saw will help you with, because you'll try to use it to remove your feet. Unlike scabies these mite larva do not burrow into the skin, they attach like ticks eat predigested skin and drop off, once you have the bites they're long gone. There's also no treatment, you're stuck with them until they clear up, that could be weeks, and nothing makes them stop itching, the only thing that helps me when I get them is dunking my feet in a bucket of ice water, I was sleeping that way for a while. The only good treatment is prevention. Chiggers are most active late summer to early fall and they attack mostly on your ankles and it's not just high grass, it's any grass. The best thing I've used to keep them off is Buggspray, it goes by different names. The stuff you want is peremithrin spray for clothing, it won't work on skin, but if you spray your clothes, socks especially, down with this it will kill any mites that try to attach to you, should keep ticks and insects off you too. Also tuck your pants into your shoes. You really don't want to get these things on you.
Ticks and annoying and they carry diseases. If you get one on you, pull it of gently with tweezers. The worst part about ticks is, they love warm areas. Can you think of any warm areas on your body where you would never want something biting you?

Prevention is the same as for chiggers pants in your boots, peremithrin, anything with DEET will work too. Make sure you check yourself good, the longer they're on you, the better the chance they'll transmit Lyme or RMSF to you. Oddly they like to get right between my shoulder blades where I can't reach them.
Mosquitoes carry more diseases than just about any other animal, and who likes mosquito bites. Tropical areas carry more risk of the really nasty mosquito born diseases, in these areas a mosquito net might be a good call. Otherwise bug sprays with DEET works wonders, other "all natural" bug sprays are available but from field work experience in extremely buggy areas, I think they're a crock. Never had any luck with them. If you're not too fond of spraying possibly poisonous chemicals on you, DEET works just as well on clothing.
Biting flies are fun. Their bites hurt and they have this annoying tendency to swarm all over you. I've done quite a bit of work in salt marshes and I have yet to find any solid defense against them. DEET works about as well as a solid gold airplane and no matter how much you cover up, they always find a place to bite you, even if that means chewing through your shirt first. The only advice I can give you is stay calm, go with it, they can sense it when you get agitated and that will only attract more.
If you're in an area with scorpions, I recommend shaking out your shoes before putting them on.
I think I'm done for the day, I've got a couple more I'll try to do tomorrow, then I post stuff up as I think of it.