Well, you learn something new every day. Usually thanks to the internet.
Today, it's that baby otters are taught how to swim by their mothers - including being dragged underwater so that they learn how to dive.
And how did we learn this? By this terribly cute new video above, which comes courtesy of Oregon Zoo and shows Molalla the baby river otter being taught how to swim by his mum, Tilly.
Click play, enjoy... and if you're in the mood for more animal cuteness, why, just take a look through our gallery below. We've got cuteness in bundles!
(Via Tastefully Offensive)