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Thomas Taylor'd again, this time a footnote to Iamblichus quoting Michael Psellus: "Magic, indeed, investigates the nature, power, and quality of every thing sublunary; viz. of the elements, and their parts, of animals, all various plants and their fruits, of stones, and herbs: and in short, it explores the essence and power of every thing. From hence, therefore, it produces its effects. And it forms statues which procure health, makes all various figures, and things which become the instruments of disease. It asserts, too, that eagles and dragons contribute to health; but that cats, dogs, and crows are symbols of vigilance, to which, therefore, they contribute."

You might also find Isha Schwaller de Lubicz, Her-Bak ("Chick-Pea"): The Living Face of Ancient Egypt, chapter 34 "The Jackal" to be of interest: there, it is asserted that the jackals are symbolic of "digestion;" that is, recycling, rumination, extraction of value that would otherwise be lost.

So one mark in favor of my theory, and one mark against!