tufts of hair
... that in rice rats living in the water, the tufts of hair at the base of the claws are reduced?
... that in <a href="./Oryzomyini" id="mwE0U" rel="mw:WikiLink" title="Oryzomyini">rice rats</a> living in the water, the <b id="mwE0Y"><a class="mw-redirect" href="./Ungual_tufts" id="mwE0c" rel="mw:WikiLink" title="Ungual tufts">tufts of hair</a></b> at the base of the claws are reduced?