Chapter XII: Introduction: To Canine Pathology

BY THE EDITOR.

PREDISPOSITION TO, AND CAUSES OF, DISEASES IN DOGS.--THE CLAIMS OF DOGS UPON US.

"Unnumbered accidents and various ills
Attend thy pack, hang hovering o'er their heads,
And point the way that leads to death's dark cave.
Short is their span, few at the date arrive
Of ancient Argus, in old Homer's song
So highly honour'd."

The dog from early youth, in fact oftentimes at the very period of birth, is exposed to many dangerous and troublesome affections, the result of causes not less complex and multifarious than those that exert an influence over the human organization. Many diseases are the consequence of their domesticity and the hereditary defects of their progenitors, others are dependent upon accidental circumstances, bad treatment, and improper nourishment. Not a few, however, of their most mortal maladies are the production of contagion, infection, and other like causes, all exercising a general tendency to disease difficult to define and impossible to avoid.

Although every species of dog is more or less subject to certain diseases peculiar to their race, those breeds of most value and more particularly subservient to the will of man are liable to a greater number of ills and casualties than other dogs, for the reason that they are more frequently exposed to unnatural fatigue, extremes of heat and cold, as also to the various dangers dependent upon the chase of wild animals. Those diseases resulting from specific causes, either natural to the race or artificially produced by the animal itself in a state of morbid derangement, are most frequent and fatal, as witnessed in distemper, rabies, mange, &c. The intimate connexion existing between the diseases of our canine friends and those of the human race, as also the strong similarity in the action of many drugs over the two systems, render the study of one branch almost synonymous with that of the other.

A little attention, therefore, on the part of the physician will render him quite familiar with and competent to relieve the many sufferings of these our most faithful and grateful of companions, and at the same time create an interest in a study that cannot fail to be productive of pleasure as well as information.

This subject, though claiming the attention of many skilful and intelligent persons in England and other countries, has scarce been thought of among us, and the mere mention of an infirmary or hospital for the accommodation of invalid dogs, would involuntarily create a smile of incredulity or contempt upon the face of most of our countrymen. Notwithstanding this display of ignorance and positive want of humane feeling for animal suffering, or a just appreciation of canine worth, we must beg leave to inform these unbelievers that such institutions are quite numerous in many large cities of the old world; and they must also learn that these institutions are conducted by gentlemen of science upon a system not less regular and useful in this particular branch, than similar establishments appropriated for the relief of suffering humanity.

To these hospitals hundreds of valuable sick dogs are annually sent, where they receive every attention, and are often snatched from the very jaws of death, or prevented, when attacked by rabies or other frightful affections, from doing mischief or propagating infection. Medicines the most potent are administered to these interesting patients with the utmost care, either as assuagers of temporary pain, or as remedial agents in the cure of disease. Operations the most complex are performed with the greatest skill, and every attention is bestowed upon these invalids in their different wards, and no trouble is considered too great to save the life and secure the services of a valuable and faithful dog.

As we have no such establishments in this country, and but a few persons upon whom we can rely for assistance in case of need, it behooves every lover of the dog to make himself familiar with, and the mode of treating the most prominent affections of these companions of our sports, and at the same time acquire a knowledge of the operations of certain medicines upon the system in a state of health or disease, so that our trusty followers may not be left to the tender mercies and physicking propensities of ignorant stablemen, or the officious intermeddling of the "pill-directing horse doctor."

The necessity of resorting to the assistance of either one or the other of these worthies is equally unfortunate, as the former will most generally kill the patient by slow degrees in forcibly and largely administering the two modern specifics for all canine affections, viz.: "soap pills and flowers of sulphur." While the latter, more bold but not less ignorant than the former, and his practice is perhaps the preferable of the two evils, will murder the dog out-right by the free exhibition of calomel, nux vomica and other deleterious substances, of the operation of which he has but little knowledge or conception. This latter system, as before said, is the most preferable, as its adoption secures for our favourite a speedy termination of his sufferings, and also relieves our own minds from a state of suspense that illustrates too forcibly the remark, "Hope deferred maketh the heart sick."

REMEDIAL MEANS FOR THE CURE OF DISEASES.

There are but few remedies useful for the cure of diseases in the human race that might not he employed by a skilful practitioner in overcoming the same or different ailments in the dog. There are, however, several drugs that cannot be used in the same proportions for the one as for the other, without danger of producing fatal consequences, as instanced in calomel, a medicine so often abused by those who pretend to a knowledge of its administration in the maladies of dogs.

This article, though given with impunity to mankind in doses varying from five grains to twenty grains, as also oftentimes administered to horses in quantities three or four times as great, without any appreciable effect, will not unfrequently, in minute doses of three grains to four grains, produce the most violent symptoms in the strongest dogs. We have seen severe vomiting and purging occasioned by these small doses, and we once salivated a large mastiff by the administration of two blue pills. It is thus that both the regular physician, and even the veterinary surgeon, unacquainted with this remarkable peculiarity, will make fatal mistakes; and how much oftener must such blunders take place when we intrust our canine friends to the care of stable-boys, or a "routine horse-doctor!"

Nux vomica, another medicine much used, and most important in the treatment of all nervous affections, is particularly noxious to dogs even in small quantities; a dose sufficient for a human subject under some circumstances, would almost inevitably destroy the animal under the same or analogous conditions.

A drachm of the powdered nux vomica is sufficient to destroy the largest and most powerful dog, while a few grains will sometimes produce death in a few minutes if administered to smaller animals.

We prescribed forty grains in a roll of butter for a worthless cur a short time since, which, as expected, produced great anxiety, difficulty of respiration, severe vomiting, tremors, spasmodic twitchings of the muscles, convulsions, and ultimate death in the course of half an hour. This powerful drug acts by causing a spasmodic stricture of the muscles engaged in respiration, as no signs of inflammation are observable in the stomach and other organs after death.

Spirits of turpentine, another remedy both simple and innocent in its operations upon the human economy, and so frequently prescribed for the expulsion of worms from the bowels, is a dangerous medicine for a dog, and will often in very small quantities prove fatal.

Aloes, a medicine more extensively used in canine pathology than any other in the materia medica, is also very peculiar in its operations upon these animals, they being able to bear immense doses of it, in fact quite sufficient to produce death if given to a hearty man.

Thus we might continue to enumerate other drugs which we have ascertained, from practical observation as well as the experiments of other, to exercise a peculiar action on the vital functions of the whole canine race, quite at variance with that common to both man and the other domestic animals.

In combating with the diseases of animals, the veterinary surgeon has more to contend with than the regular physician, and, in fact, should possess a knowledge and habit of observation even superior to the former; although the responsibility of his calling, in a moral sense, is much inferior to that of the other, as the importance of animal existence, under no circumstances, can be placed in comparison with that of human life: still acuteness of observation alone can direct him to the main cause of suffering in the brute creation, as the animal, though groaning under the most severe pains, cannot by any word of explanation point out to us the seat, the probable cause, or peculiar characteristics of such pain. We see that our dog is ill, he refuses his food, retires gloomily to his house, looks sullen, breathes heavy, is no longer delighted at our call. We cannot question him as to his feelings, or ask him to point out the particular region of his sufferings; we watch his motions, study his actions, and rely for our diagnosis upon general symptoms deduced from close observation.

Besides these external ocular evidences of morbid action, we have, as in the human subject, guides to direct us in forming a just opinion as to the nature of a dog's indisposition.

The state of the circulation is the first thing that should command our particular attention.

The pulse of dogs in health varies from one hundred to one hundred and twenty strokes per minute, according to the size and peculiar temperament of the animal, being more frequent in the small breeds.

The standard of the setter, pointer, hound, &c., may be stated at one hundred and five.

The action of the heart may be felt by placing the hand immediately over that organ, or applying the fingers to several points in the body and limbs where the large arteries are somewhat superficial, as on the inside of the fore-knee and the thigh of the hind-leg.

If the pulse in a state of rest exceeds the average standard in frequency, regularity, and softness, and a general feeling of uneasiness be present, together with reddened eyes, warm nose, and coated tongue, we know at once that there is an unnatural derangement of the vital functions, and that fever in some form is present. The next question to determine is, upon what does this fever depend? whether it be idiopathic, arising from morbific causes difficult to define, or whether it be sympathetic, with some organic affection yet to be discovered.

The appearance of the tongue in canine diseases will often materially assist us in forming a correct diagnosis; this organ in simple fever loses its rose-colour and becomes pale and coated, the gums and fæces also participate in this change.

If, however, the tongue be much furred, with a bright inflammatory appearance around the edges, with high arterial excitement, and disgust of food, with general anxiety and craving for water in small but frequent quantities, inflammation of the stomach or bowels may be suspected. If, on the other hand, the tongue remains brown and streaked, with less action of the pulse, variable appetite and diminution of pain, derangement of the liver may be apprehended.

If, in connection with some or all of the above symptoms, the breathing be laboured and painful, with a disposition to remain in the erect or sitting position, with great anxiety and general distress, we must look to the pulmonic viscera as the seat of the disease.

Thus, by examining each and every individual symptom of disease, the intelligent sportsman will soon be able to arrive at the proximate cause of all this unnatural state of things, and then he will be competent to administer such remedies as may seem most likely to afford relief. Without these precautions, however, he would often be groping in the dark, and, consequently, not unfrequently, apply those remedies more calculated to aggravate than cure the malady.

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