Canine Circovirus is a virus that primarily affects dogs, particularly puppies. It belongs to the family of circoviruses and can lead to gastrointestinal issues, such as vomiting and diarrhea. While it is not commonly associated with severe illness, it can weaken a dog's immune system, making them more susceptible to other infections. The virus is typically spread through direct contact with infected dogs or contaminated environments. Symptoms may vary, and some dogs may not show any signs at all. Vaccination and good hygiene practices can help reduce the risk of infection in canine populations.