Priorities in Life

While watching the BBC's Planet Earth series¹, I learned there are three priorities among life in the wild:

1. Eating.
   
2. Avoiding being eaten.
   
3. Chatting up the babes.

A depiction of #1 and #2 (3:00 minutes):

And one of #3. This one shows a possible 4th priority - house cleaning (2:50 minutes):

________¹ If you missed it: DailyMotion - Plant Earth