Aphthous sores on the sides of a cat's mouth are a sign of oral ulcers. Owners need to help their cats with nutritional supplements in a timely manner. Vitamin supplements can try to avoid problems with the cat's mouth. It is also critical to appropriately increase the amount and frequency of the cat's drinking water. If the ulcer on the cat's mouth is large or deep, you need to go to the pet hospital for treatment, rinse it with saline and antiseptic disinfectant, and use an appropriate amount of antibiotics to prevent secondary infection.

Symptoms of cat oral ulcers:

1. Cats with oral ulcers may have long-term sticky saliva, sometimes blood in the saliva, severe bad breath, and unlovable Symptoms include eating, red and swollen gums, and obvious pain in the mouth.

2. When a cat has oral ulcers, the fur around its mouth, forelimbs and chest may get wet. The cat may squat on the food plate but not eat, and eat cautiously. Occasionally, the cat will make a fussy sound when eating. Scream.