Bloodied Fury. While Bloodied, the boar has Advantage on attack rolls.
Gore. Melee Attack Roll: +3, reach 5 ft. Hit: 1d6+1 Piercing damage. If the boar moved at least 20 feet straight toward the target immediately before the hit, the target takes an extra 1d6 Piercing damage and, if it is Large or smaller, has the Prone condition.
Forest, Grassland, Hill