Otter family dysfunction

There's been a lot of interest lately in my post about otters raping and murdering baby seals. You might be interested in how these otters grew up to be so ruthless: as we see in this video, they're products of abusive mothers. The zookeeper cheerfully describes how a baby otter is taught to swim: "You'll see her pushing him underwater and holding him there," she says, and adds brightly, "it looks a little brutal."