Cat-to-cat transmission is not a breeding problem. Cat-to-cat transmission is a disease caused by infection with coronavirus mutations and is caused by infection. The main sources of infection are sick cats carrying viruses, contaminated food and drinking water, or feces of sick cats, which can cause infection through the digestive tract. Insects can also serve as vectors, and transmission can also occur through the placenta. This disease can be induced in cats when they are pregnant, weaned, moved into a new environment or when their immunity is weakened.

The symptoms of feline contagion are:

1. Feline contagion generally manifests as listlessness, loss of appetite or even exhaustion, rising body temperature, abnormal defecation, abdominal enlargement, etc.

2. Wet cat-borne peritoneal infection may also cause abdominal effusion, pleural effusion, pericardial effusion, dyspnea, body weight loss, and whitening of the mucous membrane.

3. Symptoms such as jaundice, enlarged liver, enlarged kidneys, paralysis of hind limbs, and cloudy eyes may also occur in dry cats.