What to do if your dog eats its leashBy nina / May 12, 2025 Uh oh! What to do FirstIt can be very frustrating and also a bit scary when you realize your dog has eaten its leash or some other possibly harmful substance. What to do SecondA small dose based on your dogs size of hydrogen peroxide can help make your dog bring up what they have swallowed, assuming… JustAnswer Contact Hello! Welcome to JustAnswer. I am a veterinarian and I will help you right away! I have over 20 years of internal medicine, surgery and preventive care.