I can't imagine how much time was spent just sitting around waiting for animals to do something cool. Having owned a cat, I'd say animals do maybe 10 seconds of exciting per day. I can't imagine the macro levels of boredom attained by these film crews.
Fortunately, there's no cutting-room-floor shots in this video
[Planet Earth II: Official Extended Trailer - BBC Earth] (Viewer #3,587,278)