what do you think came first, the chicken or the egg and why?

Question: what do you think came first, the chicken or the egg and why?
- Keywords:
  philosophy
Asked by dobbythehouseelf to Kat, Andrew, Katie, Sadaf on 24 Jun 2013.
- Andrew Swale answered on 24 Jun 2013:
  
  I think the egg came first – simply because there existed other egg-laying species that pre-date the chicken! 🙂

Question: what do you think came first, the chicken or the egg and why?