The Bornean sub-species is the rarest of all rhinos, distinguished from other Sumatran rhinos by its relatively small size, small teeth and distinctive shaped head.

• 其婆罗州亚种，是所有犀牛中最稀有的；和苏门答腊犀牛的差别在于较小的体型、牙齿、以及特殊的头型。