Can I Give My Dog household 3%?
No
Outdated practice: peroxide damages healthy tissue and slows healing. Flush wounds with plain saline instead. (Peroxide's only modern use is vet-directed emesis, see its own entry.)
Source: Veterinary Partner (VIN)
Skip it or ask a vet first if
all wound care
The safe habit
Confirm any medication decision with your veterinarian, who knows your dog's health history and other medications. VetDose shows published reference data, not prescriptions.