I watched this on PBS! It was incredible. They had all kinds of "imposters" penetrating various animal groups: apes, japanese macaques, jaguars, etc. Worth watching.
It's amazing what they were able to capture on camera. I had no idea that they grouped up like that .. and so many of them!
The PBS show is called, "Spy in the Wild: A Nature Miniseries". It's worth watching; you get to see up close animal group activity you don't normally see.
Thanks, I'll look it up!