For example, they shouldn't be taken to dog parks or allowed to interact with unknown dogs until vaccinations are completed. (petsmagazine.ca)
The decreased interest in other unknown dogs at social maturity is also what makes it easier for them to learn to ignore other dogs when they are working. (servicedogtraininginstitute.ca)
Puppies are especially susceptible to kennel cough and can even die if left untreated, so avoid exposing your puppy to unknown dogs until he is properly vaccinated. (vetinfo.com)