Massive appendix plush "feel it in your gut!" from the i heart guts series. "fantastic new size! horribly enlarged appendix measures 15" x 16. 5" x 4" and comes with a hangtag chock full of info about this vestigial organ. Some think the appendix, located at the bottom right of the intestine, doesn't do anything. Others think it helps good bacteria populate the gut. Most of us don't think about the appendix at all until it needs to get removed. Then we miss it terribly. " safe for all ages, this plush comes packed inside a biodegradable plastic sleeve.