TT #107 · Parshas Shemini · Aliyah 6 · Passuk 7
Chabad.org — Vayikra Chapter 11 with Rashi
English: And the pig, for although it has true hoofs, with the hoofs cleft in two, it does not chew the cud; it is impure for you.
Chullin 59b.
E-Daf.com — Chullin 59b (Tsurras Hadaf)
וְאֶת הַחֲזִיר. תַּנָּא דְּבֵי רַבִּי יִשְׁמָעֵאל, שַׁלִּיט בְּעוֹלָמוֹ יוֹדֵעַ שֶׁאֵין לְךָ דָּבָר מַפְרִיס פַּרְסָה וְהוּא טָמֵא אֶלָּא חֲזִיר, לְפִיכָךְ פָּרַט בּוֹ הַכָּתוּב הוּא.
Textual particularization — The pig is singled out because it is the distinctive animal that has the hoof sign while remaining impure.
The explicit naming of the swine teaches that it is the unique impure animal among those with the relevant cloven-hoof sign.