Last time we checked in with Mo 'aka Grumpy Otter', he/she (zookeepers can't confirm the otter's sex, yet) was not impressed with being poked, prodded and weighed.
This time Mo's in a slightly better mood. The Oregon Zoo has posted a video of the otter getting a swimming lesson from his mom. Molalla is pretty reluctant to enter the water and it's not surprising considering otters don't know how to swim and have to be taught by their mother.
And otter moms aren't always so gentle about it. In the video you can see Mo's mother dragging him by the scruff through the water. "It's kinda scary for us to watch, but it's natural for them," the zookeper explains in the video.
You'll get it in no time Mo.