Sightings of massive pig-boar hybrids wandering neighborhood streets have left people in one Brazilian town feeling uneasy. The animals, known locally as "javaporcos," have raised concerns about traffic crashes, possible attacks, and what can happen when large wild animals wander into places where many people live more often. What happened? Footage from the Fontes neighborhood in Soledade, a town of more than 30,000 people in Brazil's Rio Grand…