Pets often carry a variety of parasites, viruses and bacteria and other pathogenic microorganisms, which may pose a certain risk to people’s health, and can easily spread rabies, ringworm, toxoplasmosis, salmonella and other infectious diseases to people. 1. Rabies: If bitten by a dog or cat carrying rabies virus or suffering from rabies, a person may suffer from rabies. 2. Ringworm: Cats, dogs and other pets may have fungal infections, and if they are in contact with pets that are often infected with fungal infections, people may be infected with fungal infections and suffer from ringworm. 3. Toxoplasma gondii: dogs, cats and other pets may have toxoplasma gondii in their bodies. If a pregnant friend is accidentally infected with toxoplasma gondii, it may lead to deformities of the fetus. 4. Salmonella: cats and dogs and other pets may be carriers of salmonella, if this bacteria is transmitted to people, people infected with nausea and vomiting, abdominal pain, diarrhea and other gastrointestinal symptoms. People who keep pets need to pay more attention to pet health and hygiene, if there are scratches and bites, rashes, diarrhea and other physical discomfort need to be timely to the local hospital, active treatment, so as not to delay the condition.