There are two times when you need to use your puppy's name when training.  One is if there are multiple dogs present. The other is to get them to come to you.  Don't overuse the puppy's name, or there will be no value to it. 

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RESOURCES:
Podcast Website: http://puppytalkpodcast.com
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Dale's books: https://www.amazon.com/author/dalebuchanan