No spleen? No worries! If they took your spleen, tell them you lost it in a shark attack. Waaaay more interesting than the tale of your splenectomy. Who needs a spleen, anyway? Though an important part of your immune system, your spleen is one of the organs you can live without. Snuggly spleen fleece blanket shown here is available in three different sizes, as well as a sherpa fabric version!