[ 2 ] Published by the committee through the agency of Professor Ziegler.
[ 3 ] Published by Emil Eisell, in Bonn.
[ 4 ] Frau Dr. Moekel told me that she again asked the dog on the following day what the article shown him had been and he answered: "hd sdld bei arm grosfadr grab lib maibliml" (Hat gestehlt bei des armen Grossvaters Grab das liebe Maiblümchen) (Had stolen from dear grandfather's grave the dear little lilies-of-the-valley!). The object shown him had been a lily-of-the-valley, and a few days before, Frau Moekel's mother had told the children that she had taken all the lilies-of-the-valley to their grandfather's grave. Rolf, therefore, seemed to have conceived the idea that the flowers shown him had been pilfered.—Ziegler.
[ 5 ] The hatred of dogs for cats is hereditary; it is an instinct common to all dogs, and, seeing that instinctive sensations do not owe their origin to any deliberate act of reasoning, it is generally difficult to account for them. It is therefore worth drawing attention to the fact that Rolf did, nevertheless, make an attempt at giving a reasonable reply.—Ziegler.
[ 6 ] Taken from the "Communications of The Society for Animal Psychology," 1916. pp. 6-9.