RhinoisageneraltermformammalianRhinocerotidae,mainlydistributedinAfricaandSoutheastAsia,isthelargestPerissodactylaanimal,issecondonlytotheelephantbiglandanimal.Alltherhinocerosbasicallyisshortlegs,bodystout.Bodyfatandclumsy,bodylengthof2.2~4.5meters,shoulderhigh1.2~2meters;weight2800~3000kg,thickrough,andintofoldsarearrangedontheshoulderandwaistetc.;indumentumthinandhard,orevenlargeglabrous;earwasoval,alargeheadandlong,shortandthickneck,longlipextendingthehead;solidhornordoubleangle(somenofemaleangle),originatedinthedermis,angleoffcanstilllife;nocanine;tailshortandthinbody,yellow,brown,blackorgray. 　　犀牛是哺乳类犀科的总称,主要分布于非洲和东南亚,是最大的奇蹄目动物,也是仅次于大象体型大的陆地动物.所有的犀类基本上是腿短、体粗壮.体肥笨拙,体长2.2～4.5米,肩高1.2～2米；体重2800～3000千克,皮厚粗糙,并于肩腰等处成褶皱排列；毛被稀少而硬,甚或大部无毛；耳呈卵圆形,头大而长,颈短粗,长唇延长伸出；头部有实心的独角或双角（有的雌性无角）,起源于真皮,角脱落仍能复生；无犬齿；尾细短,身体呈黄褐、褐、黑或灰色.