In large amounts, it can be toxic, but for smaller use, it is fine. Orajel is generally known as Benzocaine topical. The Benzocaine in Orajel numbs the surface of the mouth. It can temporarily take the pain of irritation, sore throat, injured mouth, and others. Sometimes your pet dog can have a toothache. You can use baby Orajel on your dog. But remember high amount can be toxic for your dog. So it's best to take the advice of a veterinary doctor about baby Orajel before using it on your dog.