Which brings us to Darwin's bark spider, a native of Madagascar and the granddaddy of all web secretors. It produces the strongest natural substance on the face of the Earth. These eight-legged bug munchers' webbing is 10 times stronger than Kevlar (the shit they make bulletproof vests out of) and a whopping 25 times stronger than steel. Oh, and it also easily beats out titanium, tungsten and pretty much any other metal around.
This is what our troops should be wearing.
We're sorry to say the reason the bark spider needs its butt-adamantium is the exact one you were secretly afraid of: it makes some of the largest webs on the planet that can reach over 80 feet in length. Bark spiders like to build their lairs above rivers and lakes where they don't have to compete with their lesser brethren.
We're pretty sure those are eagles.