Cockroaches, tardigrades, and crocodilians looking at the rest of us after surviving their fifth apocalyptic event. That's just natural selection doing its thing – clearing out the evolutionary amateurs. Earth's history features five major extinction events where over 75% of species vanished, yet some organisms just refused the invitation to oblivion. These evolutionary overachievers simply dusted themselves off and said "Nice try, asteroid." Survival of the fittest isn't just a theory – it's their lifestyle choice.