ישעיהו יא:ז פירוש: אבן עזרא

פרה The large cattle; the younger of the breed is called עגל (ver. 6). Some assert that the female of cattle is stronger than the male.⁸This remark of I. E. is perhaps to explain, why the feminine form פרה is used with the masculine רב for the whole species.

Shall eat straw. As if his nature had changed, and he would no more, in seeking prey, inflict suffering upon others.