What are some good videos and or resources that offer info advice on puppy training and handling I’m looking for general advice on managing larger groups of dogs for boarding puppy runs group walks etc rather than intensive training techniques

I don’t know that video or written resources exist.

I would say that this is something where you must learn by doing. Find a mentor who runs the type of business you are trying to start and follow them around asking tons of questions.

Canine body language and your own “presence” are what have been important to me in the past in large-group settings with dogs.

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