the Hare Indian dog, now extinct, was not known to bark, but puppies learned to imitate the barking of other dogs when the breed was introduced to Europe?
Question 4: Initial dog selections centered on helpful behavior such as ________ at unfamiliar creatures and people, guarding livestock, or hunting game.
Question 5: Genetic markers (________ markers and single-nucleotide polymorphisms) have been analyzed and a representative sample of 85 breeds were placed into four clusters, each cluster having shared ancestors.