Arachnid Insights: 30 Astonishing Facts About Spiders

1Tarantulas

Tarantulas

Tarantulas and other spiders lack leg extending muscles and rely on the blood pressure spike from a heartbeat to 're-inflate' the leg back to its extended position. This is why spiders curl up when they die.


2Funnel-web spider

Funnel-web spider

The funnel-web spider's venom is extremely toxic to primates but mostly harmless to many other animals. There are no primates in Australia, apart from humans.


3Daddy Longlegs

Daddy Longlegs

Daddy Longlegs have been around for at least 400 million years, barely changing, and predate the dinosaurs.


4Tarantula and Frog

Tarantula and Frog

Some tarantulas keep frogs as pets so that these frogs can eat insects that burrow into their nest.


5Tuning Webs

Tuning Webs

Spiders tune each strand of their web to a specific frequency by making some strands tighter than others so that when something is caught in it, the spider can easily pinpoint where it is. This is also used for determining whether the source of the sound is a food or a potential mate.


6Gift

Gift

Male spiders give female spiders gifts of prey wrapped in silk to increase mating success. Wrapping the gift in silk prevents the female from stealing it without copulating and sometimes male spiders’ concealed gifts are just random trash.


7Portia

Portia

There is a spider named Portia which is capable of insight, trial-and-error learning, and puzzle solving due to its source of food, which is, other spiders.


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8Goliath birdeater tarantula

Goliath birdeater tarantula

The gigantic, hairy "Goliath birdeater" tarantula spider is entirely harmless and passive toward humans and their bite would hardly compare to the sting of a wasp.


9Female black widow spiders

Female black widow spiders

Female black widow spiders rarely eat their partners after mating and much of the documented evidence for mate cannibalism has taken place in laboratory cages where the males could not escape.


10Himalayan jumping spider

Himalayan jumping spider

The Himalayan jumping spider can live at elevations greater than 20,000 feet. It relies on bugs being blown to those heights by the wind for food.

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