To begin with, no unattached dog has any value above market price if any. It’s only value is the emotional investment one human imparts to the dog.
Those feelings… that attachment…will never be something that reasonably can be chosen over another person’s life…it may have a monetary value for its loss. But it is not so valuable as to equate a feeling, a relationship, with a human. For instance one may have a sentimental attachment a strong feeling for a family heirloom that is irreplaceable and laden w emotion. But it’s value is never equated with an actual person.
Maybe this all got crazy after planet of the apes….