I thought European explorers and settlers came here with hogs from Europe not Russians.
Geography-wise, Russia itself is part of Eurpoe and the current Russian Federation is part of Europe and Asia. The wild boar of Russia, Russian Federation, and Europe is the Eurasian boar (
Sus scrofa) which is also called "Russian boar." The domestic hogs of Europe (including Russia in its various forms) and Asia is the Eurasian boar.
When the Russians came with hogs, what hogs do you think they brought?
There have been countless imports of hogs from the Old World, both from Asia and from Europe at various times into the New World of domestic hogs and a lot of imports of non-domest Eurasion boar for sport, which are the same species as domestic hogs.