Comment on

• Genetic evidence for an East Asian origin of domestic dogs.

  Savolainen P, Zhang YP, Luo J, Lundeberg J, Leitner T. Savolainen P, et al. Science. 2002 Nov 22;298(5598):1610-3. doi: 10.1126/science.1073906. Science. 2002. PMID: 12446907
• Ancient DNA evidence for Old World origin of New World dogs.

  Leonard JA, Wayne RK, Wheeler J, Valadez R, Guillén S, Vilà C. Leonard JA, et al. Science. 2002 Nov 22;298(5598):1613-6. doi: 10.1126/science.1076980. Science. 2002. PMID: 12446908
• The domestication of social cognition in dogs.

  Hare B, Brown M, Williamson C, Tomasello M. Hare B, et al. Science. 2002 Nov 22;298(5598):1634-6. doi: 10.1126/science.1072702. Science. 2002. PMID: 12446914