Never attacked us, but we shared trails with wild boar in Germany. They'd take off as soon as they heard us comin', tho. Almost had a run-in with a 12 point buck here during hunting(rifle) season. I was flyin' down the first DH on the trail and the buck was standing at the bottom. I hit my brakes and he took off. The scariest part is forgetting that it's deer season. After the buck and I spooked each other, I only rode another couple hundred yards before deciding there was way too much gunfire around there.