Good link, Victoria! That is very helpful. 
Be sure not to accidently reward your Chi for this behavior (i.e. picking him up, getting him away from the thing he is barking at, etc. can encourage the behavior.)
Have you signed him up for a puppy class yet? That may really help the problem.
Continue to socialize him. You may not want to take him out around people as much now, but right now is the time to really keep doing it. Just be sure to warn people that he does tend to nip.
Good luck!
Be sure not to accidently reward your Chi for this behavior (i.e. picking him up, getting him away from the thing he is barking at, etc. can encourage the behavior.)
Have you signed him up for a puppy class yet? That may really help the problem.
Continue to socialize him. You may not want to take him out around people as much now, but right now is the time to really keep doing it. Just be sure to warn people that he does tend to nip.
Good luck!
