Published in Zoological Research, this review by Zhe Zhang, S. Khederzadeh, and Yan Li synthesizes cutting-edge discoveries on the origins and evolutionary shaping of domestic dogs. As one of the most successful examples of animal domestication, the dog offers a unique lens through which to examine human prehistory, societal development, and biological coevolution.
The authors emphasize that understanding the domestication history of dogs contributes significantly to our knowledge of early human culture and productivity. Dog domestication—long debated in terms of timing, geographical origin, and selective pressures—can now be explored with unprecedented detail thanks to rapid advances in genomics, archaeology, and bioinformatics.
Central to the review is the role of a rapidly expanding multidisciplinary canine genome database, containing extensive omics datasets that deepen insight into the genetic architecture of domestic dogs. These datasets reveal the molecular foundations of environmental adaptations and the phenotypic diversity seen across breeds, from morphology to behavior.
The authors discuss mechanisms underlying the canid domestication syndrome—the suite of behavioral and morphological traits linked to domestication, such as reduced aggression, increased social tolerance, floppy ears, and varied coat colors. Investigations of these traits inform both evolutionary biology and human medical research by illuminating pathways shared across species.
The review argues that by identifying the genetic and developmental factors shaping dog behavior and adaptability, scientists can improve understanding of the communicative and cooperative relationship between humans and dogs. Insights into neural, hormonal, and sensory evolution help clarify how dogs became such exceptional partners in human society.
Overall, this work highlights how multidisciplinary approaches are reshaping our comprehension of dog domestication, offering new perspectives on the deep bond shared between humans and their earliest animal companions.
Source: Zhang, Z., Khederzadeh, S., & Li, Y. (2020). Deciphering the Puzzles of Dog Domestication. Zoological Research. Published January 17, 2020.
