Sus scrofa: the widest-ranging wild pig
Claim: the wild boar is one of the most widespread land mammals on Earth. Evidence: its native range runs from Western Europe and North Africa across Asia to Japan and the islands of Indonesia, and people have carried it to the Americas, Australia and many islands, where it now lives wild.
Ask: what makes a generalist eater, able to live on roots, nuts, insects and carrion, so good at spreading?