Turret Spiders Launch Sneak Attacks From Tiny Towers

There are strange little towers on the forest floor. Neat, right? Nope. Inside hides a spider that's cunning, patient and ruthless.

More Episodes

Female webspinners shoot super-fine silk from their front feet.

Every fall, male tarantulas leave home for good with one thing on their minds: sex.

Something is growing inside that fruit fly in your kitchen.