26Tuning 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.
27. Some tarantulas keep frogs as pets so that these frogs can eat insects that burrow into their nest.
28. Daddy Longlegs have been around for at least 400 million years, barely changing, and predate the dinosaurs.
29. 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.
30. 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.
