I was not sure what the otters were catching in this grass. They also like pollywogs and don't pass up frogs. And the pup spent a rather long time working the grass in vain. Finally it did get a fish, I think, and that presented some more problems. In the next clip notice how much jaw power is used to subdue and eat something that doesn't appear that big: page18
Here is a rough guide to the video clips in the video book.