What is a White tongue rash on dogs?

A white tongue rash in dogs can indicate various underlying health issues, including oral infections, fungal infections like thrush, or other conditions such as leukoplakia. It may also be a sign of dehydration or an allergic reaction. If you notice a persistent white rash on your dog's tongue, it's essential to consult a veterinarian for a proper diagnosis and treatment. Regular oral care can help prevent some of these issues.