Zebra Tarantula
Credit: worldswildlifewonders | Shutterstock http://www.shutterstock.com/gallery-382933p1.html

A study published in 2006 had suggested the zebra tarantula (Aphonopelma seemanni) could shoot silk threads from its feet, ala Spider Man. But repeats of that experiment, along with new studies, suggest that's not the case. In fact, even spigots on the tarantula's feet do secrete silk, some scientists think the material is used fors chemosensory functions.