Puppies should be isolated until they have completed their vaccinations

Puppies that are not exposed to the world until 16 weeks or, worse, 6 months of age, are significantly more likely to be fearful or aggressive More dogs die due to behavior related euthanasia or in shelters because of lack of socialization than all other communicable illnesses, combinedEarly socialization can be accomplished without unnecessary risk to the health of the puppy.