Http://naturalhealthtechniques.com/hydrogen-peroxide-medical-miracle.htm "Dogs and chickens have low catalase levels so they have a POOR TOLERANCE to H2O2. You can kill them with hydrogen peroxide if you are not careful (especially when giving it intravenously). These species develop pulmonary edema and methemoglobinemia with peroxide use. They taught us in veterinary school that giving 3% (over the counter strength) hydrogen peroxide was one technique to use to get a dog to vomit."
Please people!!! DO NOT USE 12% or 35% FOOD GRADE peroxide on your dog or cat whether you put it on her skin or teeth. It can burn and damage healthy tissues not just unhealthy ones and remove tooth enamel. Please ONLY USE FOOD GRADE H2O2 internally (because the regular peroxide has metals and other trace elements in it) which also why you should only put it in DISTILLED water as well and NOT tap or spring water. Finally, ONLY USE 3% food H2O2 for animals. It is unbelievable how many post I read (not here) that people use 12% on their pet and don't even know that they have to use DISTILLED water.
I am taking H2O2 and if you don't know what you are doing you can BURN yourself literally inside and out with food grade H2o2!!!! This what I found in regards to the H2O2 DOSAGE FOR PETS: "For small animals (dogs and cats) use 1 oz. 3% H2O2 to 1 qt. of distilled drinking water." "3% food grade H2O2 can be added to pets drinking water at the rate of 1/2 to 1 ounce per gallon of distilled water." The Internet is full of bad advice from everyday people who literally putting their and other pets at risk.