Intelligence
We find little mention of insanity in the domesticated animals in any of our modern authors, whether treating on agriculture, horsemanship, or veterinary medicine, and yet there are some singular and very interesting cases of aberration of intellect. The inferior animals are, to a certain extent, endowed with the same faculties as ourselves. They are even susceptible of the same moral qualities. Hatred, love, fear, hope, joy, distress, courage, timidity, jealousy, and many varied passions influence and agitate them, as they do the human being. The dog is an illustration of this — the most susceptible to every impression — approaching the nearest to man in his instincts, and in many actions that surprise the philosopher, who justly appreciates it.
What eagerness to bite is often displayed by the dog when labouring under enteritis, and especially by him who has imbibed the poison of rabies! How singular is the less dangerous malady which induces the horse and the dog to press unconsciously forward under the influence of vertigo! — the eagerness with which, when labouring under phrenitis, he strikes at everything with his foot, or rushes upon it to seize it with his teeth! A kind of nostalgia is often recognised in that depression which nothing can dissipate, and the invincible aversion to food, by means of which many animals perish, who are prevented from returning to the place where they once lived, and the localities to which they had been accustomed.
These are circumstances proving that the dog is endowed with intelligence and with affections like ours; and, if they do not equal ours, they are of the same character.
With regard to the foundation of intellectual power, viz.:
, memory, association, and imagination, the difference between man and animals is in degree, and not in kind. Thus stands the account, — with the quadruped as well as the biped, — the impression is made on the mind; attention fixes it there; memory recurs to it; imagination combines it, rightly or erroneously, with many other impressions; judgment determines the value of it, and the conclusions that are to be drawn from it, if not with logical precision, yet with sufficient accuracy for every practical purpose.
bitch, naturally ill-tempered, and that would not suffer a stranger to touch her, had scirrhous enlargement on one of her teats. As she lay in the lap of her mistress, an attempt was repeatedly made to examine the tumour, in spite of many desperate attempts on her part to bite. All at once, however, something seemed to strike her mind. She whined, wagged her tail, and sprung from the lap of her mistress to the ground. It was to crouch at the feet of the surgeon, and to lay herself down and expose the tumour to his inspection. She submitted to a somewhat painful examination of it, and to a far more serious operation afterwards. Some years passed away, and whenever she saw the operator, she testified her joy and her gratitude in the most expressive and endearing manner.
short time since, the following scene took place in a street adjoining Hanover-square. It was an exhibition of a highly interesting character, and worthy to be placed upon record. The editor of the
Lancet
having heard that a French gentleman (M. Léonard), who had for some time been engaged in instructing two dogs in various performances that required the exercise, not merely of the natural instincts of the animal and the power of imitation, but of a higher intellect, and a degree of reflection and judgment far greater than is commonly developed in the dog; was residing in London, obtained an introduction, and was obligingly favoured by M. Leonard with permission to hold a
conversazione
with his extraordinary pupils. He thus describes the interview:
Two fine dogs, of the Spanish breed, were introduced by M. Leonard, with the customary French politesse, the largest by the name of M. Philax, the other as M. Brac (or spot); the former had been in training three, the latter two, years. They were in vigorous health, and, having bowed very gracefully, seated themselves on the hearth-rug side by side. M. Léonard then gave a lively description of the means he had employed to develop the cerebral system in these animals — how, from having been fond of the chase, and ambitious of possessing the best-trained dogs, he had employed the usual course of training — how the conviction had been impressed on his mind, that by gentle usage, and steady perseverance in inducing the animal to repeat again and again what was required, not only would the dog be capable of performing that specific act, but that part of the brain which was brought into activity by the mental effort would become more largely developed, and hence a permanent increase of mental power be obtained.
This reasoning is in accordance with the known laws of the physiology of the nervous system, and is fraught with the most important results. We may refer the reader interested in the subject to the masterly little work of Dr. Verity, "Changes produced in the Nervous System by Civilization."
After this introduction, M. Léonard spoke to his dogs in French, in his usual tone, and ordered one of them to walk, the other to lie down, to run, to gallop, halt, crouch, &c., which they performed as promptly and correctly as the most docile children. Then he directed them to go through the usual exercises of the
manége
, which they performed as well as the best-trained ponies at Astley's.
He next placed six cards of different colours on the floor, and, sitting with his back to the dogs, directed one to pick up the blue card, and the other the white, &c., varying his orders rapidly, and speaking in such a manner that it was impossible the dogs could have executed his commands if they had not had a perfect knowledge of the words. For instance, M. Léonard said, "Philax, take the red card and give it to Brac; and, Brac, take the white card and give it to Philax;" the dogs instantly did this, and exchanged cards with each other. He then said, "Philax, put your card on the green, and Brac, put yours on the blue;" and this was instantly performed. Pieces of bread and meat were placed on the floor, with figured cards, and a variety of directions were given to the dogs, so as to put their intelligence and obedience to a severe test. They brought the meat, bread, or cards, as commanded, but did not attempt to eat or to touch unless ordered. Philax was then ordered to bring a piece of meat and give it to Brac, and then Brac was told to give it back to Philax, who was to return it to its place. Philax was next told he might bring a piece of bread and eat it; but, before he had time to swallow it, his master forbade him, and directed him to show that he had not disobeyed, and the dog instantly protruded the crust between his lips.
While many of these feats were being performed, M. Léonard snapped a whip violently, to prove that the animals were so completely under discipline, that they would not heed any interruption.
After many other performances, M. Léonard invited a gentleman to play a game of dominos with one of them. The younger and slighter dog then seated himself on a chair at the table, and the writer and M. Léonard seated themselves opposite. Six dominos were placed on their edges in the usual manner before the dog, and a like number before the writer. The dog having a double number, took one up in his mouth, and put it in the middle of the table; the writer placed a corresponding piece on one side; the dog immediately played another correctly, and so on until all the pieces were engaged. Other six dominos were then given to each, and the writer intentionally placed a wrong number. The dog looked surprised, stared very earnestly at the writer, growled, and finally barked angrily. Finding that no notice was taken of his remonstrances, he pushed away the wrong domino with his nose, and took up a suitable one from his own pieces, and placed it in its stead. The writer then played correctly; the dog followed, and won the game. Not the slightest intimation could have been given by M. Léonard to the dog. This mode of play must have been entirely the result of his own observation and judgment. It should be added that the performances were strictly private. The owner of the dogs was a gentleman of independent fortune, and the instruction of his dogs had been taken up merely as a curious and amusing investigation
.
Another strange attainment of the dog is the learning to speak. The French Academicians mention one of these animals that could call in an intelligible manner for tea, coffee, chocolate, &c. The account is given by the celebrated Leibnitz, who communicated it to the Royal Academy of France. This dog was of a middling size, and was the property of a peasant in Saxony.
A little boy, a peasant's son, imagined that he perceived in the dog's voice an indistinct resemblance to certain words, and therefore took it into his head to teach him to speak. For this purpose he spared neither time nor pains with his pupil, who was about three years old when his learned education commenced, and in process of time he was able to articulate no fewer than thirty distinct words. He was, however, somewhat of a truant, and did not very willingly exert his talent, and was rather pressed than otherwise into the service of literature. It was necessary that the words should be pronounced to him each time, and then he repeated them after his preceptor. Leibnitz attests that he heard the animal talk in this way, and the French Academicians add, that unless they had received the testimony of so celebrated a person they would scarcely have dared to report the circumstance. It took place in Misnia, in Saxony.
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