animals cartoon farm mammals bull lineart horns ox oxen Ox clip art 牛 動物 哺乳動物 動物漫画ファーム哺乳類ブル ラインアート角牛牛
This image was donated by Pearson Scott Foresman, an educational publisher, to Wikimedia Commons, and is thereby in the Public Domain. --- See http://commons.wikimedia.org/wiki/Category:Pearson_Scott_Foresman_publisher 動物 哺乳動物 牛 ヘレフォード牛
This image was donated by Pearson Scott Foresman, an educational publisher, to Wikimedia Commons, and is thereby in the Public Domain. --- See http://commons.wikimedia.org/wiki/Category:Pearson_Scott_Foresman_publisher 動物 哺乳動物 生物学 ジャコウ牛
Iberian petroglyph ox automatically traced from public domain image at http://en.wikipedia.org/wiki/File:Arte_esquem%C3%A1tico-B%C3%B3vido.png ペトログリフ イベリア スペイン ロック アート Ox