The part is rarely the seat of acute disease. In rabies, especially of the dumb kind, it is acutely affected; but of that form of disorder the writer will have to speak in another place. Of acute laryngitis, as met with commonly in the horse, I have not seen an example in the dog, and therefore I shall not here say anything about it. Of chronic disease of the larynx there is no lack of instances. These are brought to us frequently, and generally are submitted to our notice as cases of continued or confirmed cough. Cough, however, is but a symptom; and may be no more than a sympathetic effect induced by the derangement of a distant structure. When it is caused by the condition of the larynx, it has a deep sound, which is never entirely changed in character, however much pain induces the animal to suppress it. It is essentially the same in every stage, though it may be more or less full or loud, according to the state of the air passage.
This cough may start up from sympathy; but then it is always less sonorous, harsh, and grating. It is also less spasmodic, and likewise less the consequence of particular causes. When the larynx is the seat of the affection, the cough, should it once begin, continues for a considerable time; and cold air or excitement will invariably induce it. In bad cases every act of inspiration is followed by a kind of noise intermediate between a grunt and a cough. Sometimes the breathing is accompanied by a species of roaring; and I have seen one case in which a blood-hound had every symptom of laryngismus stridulus, or the crowing disease of the human infant.
Laryngeal disorders are seldom brought under our notice until they are confirmed, and they are difficult to cure in proportion to the length of time they have existed. The food in every case must be rigidly regulated, and no solid flesh should be allowed; but if the animal be very old or weak, beef tea or gravy may be added to the rice or biscuit which constitutes the chief portion of the diet. The condition of the stomach must so far as possible be ascertained, and the medicines necessary to correct its disease should be administered. The exercise must not be stinted, neither should confinement within doors be insisted upon. All must be done to assist the digestion and invigorate the health; such precautions being adopted as prevent the aggravation of the disease. Sudden changes of atmosphere, as from a warm room to a frosty air during the depth of winter, should obviously be avoided; neither would it be prudent to race the animal about, or induce it to perform any action calculated to accelerate the breathing.
At the commencement a gentle emetic given every other morning until six or seven have been administered, with a laxative occasionally if the bowels are torpid, is often productive of speedy benefit. A mustard poultice to the throat is also to be recommended, but he who applies it must be attentive to remove it when it appears to seriously pain the animal. It may be repeated on each successive night, or even oftener, but should never be reapplied before the skin on which it was previously placed has ceased to be tender. Leeches to the throat are often of service, as also are small blisters to the chest. I found great improvement result from wearing a very wide bandage, which was kept wet, and covered with oil silk, round the neck. This is easily made, and strips of gutta percha, or stout leather, will prevent it being doubled up by the motions of the head; and it is scarcely a disfigurement, since it only looks like a large collar. A seton in the throat may be tried, but though often beneficial, it ought only to be inserted by a person acquainted with the anatomy of the dog; for the jugular veins in this animal are connected by several large branches, which run just where the seton would be introduced. These could not be pierced with impunity, nor ought the seton to be left in so long as might induce sloughing, when the vessels probably would be opened; for as the dog badly sustains the loss of blood, the result would surely be fatal.
Internal medicines are not to be neglected. All sedatives, balsams, expectorants, and peppers, with some alkalies and stimulants, may be tried, and even alterative doses of mercury with caution resorted to. Dogs are more peculiar with respect to the medicines that act upon individuals than any other animals I am acquainted with. That which touches one will be inoperative upon another; and what violently affects one, will on a second, apparently of the same bulk, strength, age, and character, be actually powerless. This renders dog-practice so difficult, and makes the explanation of any decided mode of treatment almost impossible. A great deal must necessarily be left to the discretion of the practitioner, who, despite his utmost care, will often have reason for regret, if he do not in every new instance proceed with caution. The following pills are likely to do good:—
| Barbadoes tar | Half a drachm to two drachms. |
| Powdered squills | A drachm to four drachms. |
| Extract of belladonna | Half a scruple to four scruples. |
| Liquorice powder | A sufficiency. |
Beat into a mass, and make into twenty pills; give four daily. Or,
| James's powder | One grain to four grains. |
| Dover's powder | Six grains to a scruple. |
| Balsam of Peru | A sufficiency. |
Make into one pill and give as before. Or,
| Extract of hyoscyamus | One to four grains. | |
| Powdered ammoniacum, and cubebs, of each | } | Four to twelve grains. |
| Venice turpentine | A sufficiency. |