Snake bites,
Met a guy once at a gun show here in South-Africa.He had terrible marks on his lower left leg and I asked him out about it.Apparently he was bitten 4 times in his bed more than a year previously by a moz.spitting cobra.This happened in the North-West province of RSA.At that stage it wasnt even half way healed and he told me that his doctor said that it will go on for more than 2 years before healed 100%.

Spiders,
My mothers oldest sister was bitten by a Black widow when she was 8months pregnant with my cousin.Nothing wrong with him or his mom today and he is also a regular hunter.only thing I can see that the venom of the spider had on him as an unborn baby is maybe the size of his ears and nose

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But don't be fooled by this true story cause a black widow can be lethal.