I haven't done this with a dog. But for ferrets. However, same concept is used whenever introducing new foods to anything really...
You mix old foods with new food.
Start out with a very small portion or raw to old kibble. Like 25% raw to 75% kibble for a few weeks then gradually go to 50-50%. And eventually 75% raw to 25% kibble etc, etc.
I've always introduced organs from the start. It won't be a complete diet otherwise.
And its much easier on carnivore to digest raw than commercial foods. They're designed and evolved to digest such foods.
Just chewing the raw meat itself is great for dental health. Bone is helpful, but the meat acts like a tooth brush too getting rubbed into the nooks and crannies. Dogs have a slicing motion with their teeth when they chew. Meat gets up in between each tooth compared to a dry kibble that breaks at the tip of the tooth when being eaten.
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