Commentary for Niddah 48:26

אמר רב יהודה אמר שמואל

was to the large cattle also, one can well see the necessity for it. For it might have been presumed that since [a seven monthly] is viable in the case of a woman it is also viable in that of cattle, we were informed that it is not viable; but if you maintain that reference was made to small cattle only, this would be obvious, for can a three monthly abortion live?<span class="x" onmousemove="('comment',' Of course not; and there would have been no necessity to mention it. ');">²²</span>

Rashi on Niddah