Over the past year we’ve shared some great viral videos from around the Internet, including a few that were created by National Geographic staff, explorers, and partners. Many of these videos featured animal behaviors that were relatively unknown and surprising.

Human beings share the planet with hundreds of thousands of other species. Although many have been named and characterized by scientists, there are still many things experts can’t yet explain. At the same time, the proliferation of smartphones and affordable video cameras has brought an avalanche of new recordings of natural phenomena, some never previously documented.

This wealth of content has also raised new ethical questions. How do we know a video is real and not altered in some devious way? Did