Back when my kids were little we were out in South Dakota and drove through Bear Country USA which seems to be similar to the park you drove through. They told us not to stop to keep moving and at one point there was a bear in the road and the motorhome in front of us had to stop. Another bear came up behind the motorhome and dismantled the tail lights. Took both lenses off and carried them off, just very casually! They must have been happy with that amount of damage because we escaped without any problems!