Overview: Documentary about spiders, showing how arachnids jump, spin webs and poison and digest their prey. Covered by only a thin skin, their tiny bodies are extremely delicate, yet their venom can be lethal. The Sydney Funnel Web weighs just four-hundredths of an ounce, but it has half-inch fangs, sharp enough to pierce a toenail, and the most toxic spider venom known to man.