Reference for Chullin 244:32

והא אלה אכולהו כתיבי

But why does not our Tanna [of our present Mishnah] include the mole? - R'Shesheth the son of R'Idi said: Our Tanna agrees with R'Judah that it depends upon the feel [of the skin],<span class="x" onmousemove="('comment',' The Tanna of our Mishnah and R. Judah (also mentioned in our Mishnah) do not form their views by the interpretation of the aforementioned verses but from practical observation. It depends entirely upon the feel of the skin. If the skin of the reptile feels soft and fleshy it is regarded as flesh, but if hard and scaly it is not regarded as flesh.');">¹⁷</span>

Jastrow

Jastrow

Jastrow