▁as ▁a ▁solit ary , ▁no ct urn al ▁animal , ▁but ▁recent ▁observation ▁indicates ▁that ▁the ▁r uf ous ▁rat - k ang ar oo ▁may ▁form ▁loose , ▁pol yg yn ous ▁associations . ▁It ▁fe eds ▁mostly ▁on ▁tub ers ▁and ▁fung i , ▁but ▁also ▁on ▁leaves ▁and ▁other ▁veget ation . ▁ ▁Description ▁A ▁species ▁of ▁the ▁family ▁Pot oro idae ▁( rat ▁k ang aro os ), ▁small ▁to ▁medium ▁mars up ial s ▁that ▁include ▁the ▁living ▁Pot orous ▁( pot oro os ) ▁and ▁B ett ong ia ▁( b ett ongs ). ▁They ▁are ▁not ▁closely ▁related ▁to ▁others ▁of ▁the ▁family , ▁and ▁the ▁largest ▁ext ant ▁pot oro ine ▁species , ▁and ▁their ▁characteristics ▁have ▁them ▁placed ▁within ▁a ▁monot yp ic ▁genus . ▁ ▁A ep y pr ymn us ▁r uf esc ens ▁is ▁distinguished ▁by ▁the ▁r uff led ▁and ▁br ist ly ▁hair ▁of ▁the ▁pel age ▁and ▁r uf ous ▁t int ▁of ▁the ▁fur ▁at ▁the ▁upper ▁parts . ▁The ▁hair ▁across ▁the ▁back ▁is ▁pre domin antly ▁grey , ▁the ▁r uf ous ▁t inge ▁more ▁evident , ▁and ▁is ▁inter sp ers ed ▁with ▁sil very ▁hair s . ▁An ▁ind ist inct ▁stri pe ▁appears ▁at ▁the ▁hip ▁line . ▁The ▁under parts ▁are ▁also ▁grey , ▁although ▁pal er . ▁The ▁combined ▁head ▁and ▁body ▁length ▁is ▁ 3 8 5 ▁to ▁ 3 9 0 ▁mill imet res . ▁The ▁tail