sublingua
... that prosimian primates like lemurs and slow lorises have a "second tongue" called a sublingua, which they use to clean their toothcomb?
... that <a href="./Prosimian" id="mwA-c" rel="mw:WikiLink" title="Prosimian">prosimian</a> primates like <a href="./Lemur" id="mwA-g" rel="mw:WikiLink" title="Lemur">lemurs</a> and <a href="./Slow_loris" id="mwA-k" rel="mw:WikiLink" title="Slow loris">slow lorises</a> have a "second tongue" called a <b id="mwA-o"><a href="./Sublingua" id="mwA-s" rel="mw:WikiLink" title="Sublingua">sublingua</a></b>, which they use to clean their <a href="./Toothcomb" id="mwA-w" rel="mw:WikiLink" title="Toothcomb">toothcomb</a>?