. Denkende Tiere : Beiträge zur Tierseelenkunde auf Grund eigener Versuche ; der kluge Haus und meine Pferde Muhamed und Zarif ; mit Abbildungen nach eigenen Aufnahmen. Horses; Animal intelligence; Animal training. (2. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Krall, Karl. Leipzig : Engelmann

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Keywords: ., boo, bookcentury1900, booksubjectanimalintelligence, bookyear1912