Courteous Canine

Dog Owner's Guide: How to socialize your puppy Puppies go thorough a critical period of socialization between eight and 16 weeks of age. During this period of time they mature very rapidly. If isolated from external stimuli and not exposed to the outside world, they can grow up to be fearful adult dogs.

When dealing with behavioral issues DO NOT wait to get professional advice. At the minimum do your own research on how to handle the issue. The longer you put it off and the longer your dog is aloud to continue with the undesirable behaviors the harder it is to correct. I hear from clients way to often that their dog has been exhibiting certain behaviors for more than 2 to 3 years. You are failing your dog when you do not correct the issues. If your dog has bitten someone a year ago and you are just now seeking professional advice you have put others at risk of being bit and your dog being confiscated.
Please be a responsible pet owner and seek help as soon as you see the behavior manifest.