Cats may be infected with parasites if they eat them, because cockroaches carry a large amount of bacteria, parasites and other toxic substances. After cats eat them, they will experience symptoms such as vomiting, diarrhea, and loss of appetite. When an owner sees a cat eating cockroaches, It is necessary to stop it in time and deworm the cat. It is necessary to keep the home environment clean and hygienic to reduce mosquitoes.