How to socialise an unsocialised dog?

To socialize an unsocialized dog, use a shorter leash, whether your dog is fearful or aggressive, as it's a great way to keep him under control. With a three- or four-foot leash, there's less distance between you and your dog, and that means more control. Invest in training, as it's the best way to help your dog if you think he is not well socialized. Make sure your dog knows basic commands, like “heel,” “sit” and “come,” all of which can be helpful if your dog starts to act out. No matter their age, all dogs can be socialized. If you feel up to it, you can try socializing your pooch on your own, but the socialization of dogs that are very fearful or aggressive is better handled by a professional trainer. When your dog overreacts to a situation, don't panic, as it can reinforce his reaction through your own behavior. Instead, try turning the negative into a positive by using a command like “sit” or “watch me” to get his attention, then praise him or reward him with a treat for complying.