Hullin 75: Permitting the Forbidden Fats

The odd case of the entirety of an animal fetus that is permitted for food after its mother is slaughtered in a kosher way - and the entire fetus is permitted, even though some animal parts are usually prohibited, even with proper slaughtering. The Gemara presents two versions of the passage addressing the different opinions on this case. Also, the case of finding the fetus alive in the womb after kosher shechitah - it doesn't need shechitah, but what's the difference between that and the original case? Whether the ben pakuah (fetus, under these terms) steps on the ground. Also, is the offspring considered the ben pakuah of its father as well as of its mother? But at the rabbinic level, the ben pakuah should be slaughtered anyway. And also the decree was made for the future generations of the ben pakuah. Plus, the informative case of terumah and demai and the possibility of asking whether even an ignoramus has separated properly. [Who's Who: Rabbi Shimon Shazuri]