TT #197 · Parshas Shemini · Aliyah 7 · Passuk 34
Chabad.org — Vayikra Chapter 11 with Rashi
English: “From every food”: the verse means food suitable for human eating, excluding animal fodder.
Toras Kohanim.
Wikisource — Sifra, Shemini, Chapter 7
Textual exclusion — The Chazal derives the stated rule directly from the wording of the verse.
The category is food for humans, with the stated exception.