otter

Otters have been roaming the planet for quite some time, and researchers from China, France and the U.S. recently discovered yet another ancient relative of the adorable, hand-holding creatures we know and love today.

Cute pictures of sea otters holding hands have become popular online, but a recent Dodo article reveals that there is a practical purpose to the adorable behavior--it keeps them from floating away from each other while sleeping in the water.

While we tend to associate a single sound with a particular animal, every animal produces a multitude of sounds that we could not even imagine.