1. You’re right that the other animals are equally unkosher. There are even things “more” unkosher than the pig, such as insects (chocolate covered ants, anyone?).

    On the other hand, the pig is seen as the most “insidious” of the unkosher animals, as it is the only animal known which has a true split hoof like a kosher animal, but does not chew its cud. In this, our Sages saw it as the “worst” of the unkosher, as it “puts on an outer show” of being kosher (split hooves), yet on the inside (chewing its cud, which is a function of digestion) it is “treif!” Thus, it symbolizes falsehood, the antithesis of Judaism.

    Best wishes from the Team