Dog sex

Dog behavior is the internally coordinated responses of individuals or groups of domestic dogs to internal and external stimuli.[1] It has been shaped by millennia of contact with humans and their lifestyles. As a result of this physical and social evolution, dogs, more than any other species, have acquired the ability to understand and communicate with humans and they are uniquely attuned to their behaviors.[2] Behavioral scientists have uncovered a wide range of social-cognitive abilities in the domestic dog.

Co-evolution with humans

The origin of the domestic dog (Canis lupus familiaris or Canis familiaris) is not clear. Whole genome sequencing indicates that the dog, the gray wolf and the extinct Taymyr wolf diverged at around the same time 27,000-40,000 years ago.[3] How dogs became domesticated is not clear, however the two main hypotheses are self-domestication or human domestication. There exists evidence of human-canine coevolution.