A Good Piece of Kit

The Mini-Educator from E-collar Technologies is a good bit of kit, and over on his web site Lou Castle does a very good job of teaching how to train a dog to "velcro" to you, how to get a solid recall, and how to "bomb proof" to make sure your dog "gets it" all the time.

The Mini-Educator is small enough for a a very small dog like Moxie or even a Chihuahua, as can be seen below.

With a small dog, training solely with food rewards is particularly problematic if you want to avoid obesity.  The veterinarian dog owner in the interview, below, knows that obesity is the number one health issue facing dogs.