In Stephen King's novel IT, Pennywise the clown is actually a shape-shifting spider. Leon Watson at Mail Online has a very interesting article titled, "Now THIS is a creepy crawlie! Meet the bright green spider that looks just like the clown in Stephen King's horror film 'It'
Engineer Igor Rayabov has taken macro photo's of spiders nears his house. He discovered a bright green spider (belonging to the thomisidae family) that bears a startling resemblance to none other than Pennywise!
The article itself draws the conclusion for us, stating,
"Terrifying: The spider (left), which belongs to the thomisidae family, bears a startling resemblance to the clown in Stephen King's hit 1990 horror film ItThe full article is at www.dailymail.co.uk