The cool thing about spiders is that they are invertebrates which means that they do not have backbones. Another thing is that spiders are not insects. Many people think they are related to the insect family but they are not. They are related to the Arachnid family. Did you know that there are more than 30,000 species of spiders. Most spiders have at least six legs or eight. Spiders’s babies come from eggs which means they are oviparous. And The last thing is there is over 100 families in the spiders.