Animal infectious diseases are illnesses caused by pathogens such as bacteria, viruses, fungi, and parasites that can affect various animal species. These diseases can spread through direct contact, contaminated food or water, and vectors like insects. Common examples include canine parvovirus in dogs and avian influenza in birds. Preventing and controlling animal infectious diseases is crucial for animal health and public safety. Vaccination, proper hygiene, and biosecurity measures are essential strategies. Some diseases can also be transmitted to humans, known as zoonoses, highlighting the importance of monitoring and managing these infections in animal populations.