Free: Contests & Raffles.
That's a strange story.. I've had several otter vs. dog encounters and only once was there a conflict and that was when my Chessy cornered a large male otter. All the other times they ran or swam away avoiding the dogs like the plague.In your case it could be that the otters were very hungary and were fighting over who got the duck. I know otters love duck, had one steal one out of my duck sling only 20 feet away.
Had I asked him, he would have gone after another duck. That old dude has no "off" switch when it comes to feathers in the mouth.Having said that, he did snore on the way home!