BLACK WIDOW: She may be tiny, but the female black widow delivers one of the deadliest bites in the insect world. In fact, a single bite packs enough venom to kill a 50-pound child in a matter of hours. Practically blind, the black widow's web is her eyes and ears to the world. Insects that become entangled in the web are quickly wrapped up with silken rope and then pumped full of poison, which slowly dissolves the victim's insides. When the meal is ready, the black widow sucks out the juices then discards the shell. She is also a cannibal; if the male doesn't play the right tune on her web during courting, he may get eaten. He's also particularly vulnerable immediately after mating.