The Deutsche Gesellschaft fur Tierpsychologie officially endorsed the calculating horses and thinking dogs, including a dog who at Christmas time told his mistress by paw-spelling that he believed the infant Jesus was coming.[9] After the unmasking of the affair, the embarrassment of such eminent believers as von Buttel-Reepen, Edinger, Haeckel, Plate, Sara-sin and Ziegler made the term 'Tierpsych