Which of the following is a common sign of canine parvovirus infection in puppies?

• A. Sneezing and coughing
• B. Lethargy and vomiting
• C. Increased appetite
• D. Hair loss

Answer: (B)

Canine parvovirus in puppies most reliably shows up as gastrointestinal illness with systemic impact. The virus damages the lining of the intestines and can also affect bone marrow, leading to rapid illness. Lethargy reflects dehydration and overall malaise, while vomiting is a direct sign of the GI irritation caused by the infection. Together, these symptoms are a hallmark early presentation of CPV, which is why this option is the best choice.

The other signs don’t fit CPV as well. Respiratory symptoms like sneezing and coughing point to a different set of infections; an increased appetite runs counter to the typical appetite loss seen with CPV; and hair loss is not a characteristic sign of the virus.