Canine Distemper Virus (CDV) is a highly contagious viral disease that primarily affects dogs but can also infect other animals, such as foxes, raccoons, and ferrets. The virus spreads through respiratory secretions, direct contact, or contaminated surfaces. Symptoms include fever, coughing, nasal discharge, and gastrointestinal issues. Vaccination is the most effective way to prevent CDV, and most puppies receive the vaccine as part of their routine immunizations. Early detection and supportive care are crucial for affected animals, as the disease can lead to severe complications, including neurological problems and death.