Last week, I had the kids at the park. As I was pushing Brooks in the swing, he asked me, "What kind of legs does a spider have?" Well, I told him they have eight legs - I wasn't for sure how to describe what kind of legs they have. He looked at me and said, "Like an octopus?" Yes! What a great correlation! An octopus also has eight legs.
That satisfied his curiosity to one question, now, I only have 5,000 more to answer before he grows out of this stage!