牛

niú ox; cow

Component (a building block) — not the same thing as a radical or a sound component. · 4strokes

Forms

牛 left — 作左偏旁时末横改提，写作「牜」，如「物」「牧」。
牛 top — 作字头时末竖不下伸，止于长横，如「告」。
牛 bottom — 作字底时保持完整字形，如「犁」「牵」。

Characters that use it as a component

件告牡牢牧物牲牵

Characters filed under it as a radical

Kangxi radical no.93 · 4strokes — The 214 Kangxi radicals

Filed under it in a dictionary. That is a lookup convention — it does not mean it is the only part the character is built from.

牛牡牢牧物牲牵特