HOW TO TRAIN CHIHUAHUAS
1. TRAIN THEM TRICKS
2. TRAIN THEM DISCIPLINE
3. TRAIN THEM PATIENCE
It is important to train your dogs. For example,
if someone walked up to your dog and wanted to pet your dog, the dog will
usually bite because dogs don't like strangers. Dogs need to stay with someone
for a long time to get used to them. For example, one of our dogs is very mean
to other people, but nice to us, usually, because he is used to us. But anyway,
back to training dogs. Dogs will eventually come to you when you say their name
because they'll get used to it. For example, if someone said "Come,
Roger!", the dog would come to them because that would be the call for
them to come to them.

Citations:
lifestyle.iloveindia.com/lounge/facts-about-chihuahuas-4040.html
www.all-about-chihuahuas.com/chihuahuafacts.html
aboutchihuahua.net/15-facts-about-chihuahuas