Hydrogen peroxide can be used on dogs, mainly to induce vomiting if they've ingested something harmful, but it should only be done under the guidance of a vet. It's also sometimes used to clean minor wounds, but care must be taken as it can irritate tissues. Do you have a specific concern about your dog that you're considering using hydrogen peroxide for? Your pet's safety is important, and I'm here to help with any questions you might have!