While many fear spiders, they are vital to a healthy ecosystem because they eat harmful insects, pollinate plants and are a food source for many small mammals.
There are around 38,000 species of spiders in the world, but scientists believe there are still just as many that haven't even been discovered yet.
Spiders are arachnids, not insects, because they only have two body segments as opposed to three.
On average, spiders take about one hour to spin a web.
Not all spiders spin webs, but all spiders spin silk. Spiders that form webs do so to catch their prey. However, about half of the known spider species actively hunt for their prey.
When a spider travels it will have four legs on the ground and four legs off of the ground at all times.
The majority of spider species live on land. However, there are a few, such as the raft spider, which live in or on water. You may even see them running on top of the water's surface.
While a spider's muscles are able to pull its legs inward, the only way to extend their legs back out is by pumping a watery liquid through them. This is why we typically see a dead spider's legs curled up.
Spiders have between two and six spinnerets at the back of their abdomen. Each one has hundreds of holes, all producing silk.
When silk comes out of the spider's spinneret it is initially a liquid, but it hardens as soon as it hits the air. Spiders can have up to seven types of silk glands, each creating a different type of silk. Different types include smooth, sticky, dry, or stretchy silk.