藝術與建築詞典根目錄
....代理者層面
........活體有機體
............真核生物 (域)
................動物界 (界)
....................脊索動物門 (門)
........................脊椎動物亞門 (亞門)
............................哺乳綱 (綱)
................................奇蹄目 (目)
....................................馬科 (科)
........................................馬屬 (屬)
............................................馬 (種)
|||................................................普爾熱瓦爾斯基氏野馬 (亞種)
|||................................................阿拉伯馬 (品種)
|||................................................比利時馬 (品種)
|||................................................佩爾什馬 (品種)
|||................................................純種馬 (品種)
................................................<依尺寸區分之馬>
|||....................................................小型馬
|||....................................................輕型馬
|||....................................................重型馬
................................................<依用處或角色區分之馬>
|||....................................................挽馬
|||....................................................賽馬
|||....................................................乘用馬
|||....................................................快步馬 (馬)
|||....................................................軍馬
............................................野驢 (種)
|||................................................驢