TT #246 · Parshas Shemini · Aliyah 7 · Passuk 42
Chabad.org — Vayikra Chapter 11 with Rashi
English: “Whatever walks on four”: this is the scorpion; “every” includes the beetle and similar creatures.
Chullin 67b.
E-Daf.com — Chullin 67b (Tsurras Hadaf)
Textual inclusion — The Chazal applies the verse’s wording and structure to establish the stated teaching.
The four-footed crawling class is included.