Is zinc oxide harmful to dogs if they eat it?

Yes, zinc oxide can be harmful to dogs if ingested. It can lead to zinc poisoning, which may cause symptoms such as vomiting, diarrhea, lethargy, and abdominal pain. In severe cases, it can result in more serious health issues, including kidney damage and hemolytic anemia. If you suspect your dog has ingested zinc oxide, it's important to contact a veterinarian immediately.