Originally Posted by
twowhat?
Since he's already 3, any damage from lack of socialization/exposure is already done BUT you can do a lot to help it along. Don't tiptoe around him - let the regular noises of the household continue. Get him out on walks to see other people, other dogs, cars, etc. His reaction will let you know how to proceed - if he's extremely fearful you are dealing with a larger problem that I would contact a behaviorist for but if he doesn't seem that fearful and maybe just reserved, then just get him out and used to those things!