Like the dog, poor pussy is a frequent sufferer from this troublesome complaint, which, if neglected, extends to the delicate internal mechanism of the ear, probably ultimately leading to destruction of the cartilage and bone.

Some cases of canker are, unquestionably, of constitutional origin, but by far the largest proportion of cases in the cat are due to a species of minute parasites, and the acari can clearly be seen if the sooty-like deposit be examined.

Their presence sets up a great deal of local irritation, but seldom leads to suppuration, so frequent in cases of a constitutional nature.

It is absurd to say that internal canker of the ear arises from a cold, etc. One or both ears may be affected.

Symptoms

The affected animal will be seen seeking relief by rubbing its ear, and, not infrequently, has fits of vertigo, running round the room as though it were in a frenzy.

If the ear is examined it will be found reddened inside and moist, with either a sooty-like deposit or else a discharge. Manipulation causes pain, and the animal is constantly turning its head to one side.

Treatment

Grip the cat firmly, in accordance with instructions given elsewhere (see "Management").

Syringe out the ear with a little methylated spirit, or else clean it out with a little boracic acid lint and methylated spirit.

In fact, this must be done daily. In addition to this, if there is a sooty deposit, dress the ear with the following lotion: R Oil of eucalyptus . . 1 drachm. Oxide of zinc . . 2 drachms.

Oleate of zinc . . 1 drachm.

Methylated spirit of wine 1/2 ounce.

Almond oil, sufficient to make 2 ounces.

Mix, and pour a little of this cream into the ear night and morning.

Ordinary cases of canker of the ear can generally be cured by dressing the inside of the ear with the following lotion: R Solution of acetate of lead . 2 drachms. Sulphate of zinc . . . 20 grains. Chloride of zinc . . 4 „

Distilled water ... 2 ounces.

Apply to ear daily.