1)
Why does the Torah specify "Kol Cheilev Shor, Kesev va'Eiz"?
1.
Torah Temimah (citing Kerisos, 4a): To preclude the Cheilev of a Chayah and of a bird which are permitted. 1
2.
Chulin, 117a: To restrict the Isur Cheilev to Cheilev which is common to all three, permitting the Alyah, which a Shor does njot possess. 2
2)
Why does the Torah add the word "Kol Cheilev ... Lo Socheilu"?