In Ra's account the meeting place between humans and other mammals is what goes. All mammals carry the potential of Gate 19, and through the 49 that has been the place where they and we can meet, which he links to domestication and to using animals for food. When the channel no longer functions in the mutated beings, that bridge is gone, because they are no longer in competition with animals for territory or food. He says openly that he has no idea what this will mean for dogs and cats, which is a good marker for how speculative this part is. And note the scope: this concerns beings carrying the mutation, not your relationship with your own animals. This is Ra's cosmology rather than a fact, it promises nothing and nobody knows exactly how it will play out.
This is not a fact, not medical advice and not a promise of healing. It is part of the cosmology Ra Uru Hu, who founded Human Design, left behind, and nobody knows exactly how it will unfold.
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