Apparently the itch of its teething impels it to snap its jaws at anything in front of it. (Chewtle)
It feeds on seaweed, using its teeth to scrape it off rocks. Electric current flows from the tips of its spines. (Pincurchin)
It stores flammable gas in its body and uses it to generate heat. The yellow sections on its belly get particularly hot. (Sizzlipede)