There is no similarity between Spiderman and normal spiders other than the ability to climb walls and produce silk. Even that silk part was emulated inappropriately.
So the sticky stuff Peter Parker shoots from his wrists? Hmmmm... No wonder most people freak out when he shoots a huge blob of sticky emissions at them.
|Sticky? Yes. Very sticky indeed. Image: marvel.wikia.com|
I'll never see Spiderman the same way again.