But those emotes will still be emotes, so they to will reproduce into more violent emotes faster then they can kill other emotes. And even if they somehow manage to ill of all non violent emotes (which is not really physically possible because of the speed at which they reproduce) then the population will still increase at just below before rate because the violent emotes will reproduce faster then they can kill.
My first idea was that the Emote explodes and the egg is the last piece of the Emote. But that wouldn't explain why we have so many emotes. 2 other ideas have been done already. And then I had the idea for this.