Size of a river otter

Asked July 12, 2019, 7:23 PM EDT

My neighbor down the road has a koi pond and he told me that recently river otters went over to his pond and ate all of his fish.
I recently got my pond going and bought a bunch of fish including koi and now I am alarmed that they could be next. I have to get a fence around the pond but I am unfamiliar with river otters and don't know how high it should be. How tall can the tallest river otter get standing on its hind legs? Can they climb up and over a fence? I really will appreciate your help in this matter.

Humboldt County California

1 Response

Thank you for your question. We do not feel we can answer this question. and suggest you ask your own county Extension office for help. Here is their webpage: Good luck!