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Every fall, male tarantulas leave home for good with one thing on their minds: sex.
4:28
Something is growing inside that fruit fly in your kitchen.
4:21
Giant Malaysian leaf insects stay very still on their host plants to avoid predators.
4:46
Kidnapper ants raid other ant species' colonies, abduct their young.
4:34
Alfalfa leafcutting bees are way better at pollinating alfalfa flowers than honeybees.
4:13
Peregrine falcons catch other birds mid-flight by diving at more than 200 mph.
4:11
A rattlesnake's rattle isn't like a maraca, with little bits shaking around inside.
4:21
These parasites crawl onto your bed, bite you and suck your blood.
4:07
The fearsome wormlion ambushes prey at the bottom of a tidy sand pit.
3:27
These tiny arachnids feast on sebum, the greasy oil in your pores.
4:10
Honey bees make honey from nectar to fuel their flight – and our sweet tooth.
4:27
This millipede uses deadly cyanide gas to keep predators at bay.