There are over 45,000 species of spiders. So why are some spiders venomous and some not, and just what do all those different kinds of venom do? Arachnologist and spider-venom expert Greta Binford is here to take all our questions about spiders.
There's a story currently making the rounds about an Australian man who, upon returning from a trip to Bali, discovered that a spider burrowed under his skin and traveled up to his chest. Freaky? Yes, but it's also not plausible.
Arachnophobes can usually take comfort in the fact that spiders are solitary creatures. The vast majority of the almost 40,000 known arachnid species have pretty miserable social skills, so they tend keep mostly to themselves.
Scientists recently did an MRI of a tarantula. They managed to capture a video of the beating heart of the spider. Apparently it's like no other heartbeat seen before.