Can hydrogen peroxide irritate my dog's ear, causing itch and pus?

I'm very sorry your broke your hip and shoulder! It sounds like he may have an ear infection, and I would not recommend putting a solution of hydrogen peroxide and water in his ear. That will not help cure an ear infection, and may make the problem worse. Ear infections can be caused by bacterial, yeast, or ear mites, and Rusty needs to see a vet in order to have it diagnosed and treated. I would see if you have a friend who can take him into the vet for you to get his ears examined. It's important to have any ear infections examined and treated promptly, as leaving them untreated can lead to hearing loss.

Nope, I would definitely stop that. Ears naturally clean themselves and don't need cleaned unless there is an issue. If you're seeing redness, brown/black discharge, an excessive amount of wax, or Lady is rubbing/scratching them, she needs to go to the vet to have them sampled and appropriate treatment started. Unfortunately, she could actually get an infection from the hydrogen peroxide you've been using, so definitely keep a close eye on things right now. The good news is that ear infections are very treatable with proper medications from the vet.

You should definitely not use hydrogen peroxide as it can cause serious damage to the ear, Benadryl will not help. It's probably an ear infection, often it cannot be seen from the outside. Ear infections are very common in dogs, it is usually caused by either yeast or bacterial disease. the treatment is usually simple and straightforward, you will have to take her to the vet and get the ears checked, then a prescription ear drops will be prescribed according to the infectious agent.

It sounds like she has a bacterial skin infection so she should be examined by a vet for treatment. Your vet can shave the area, flush and clean the area, and then prescribe an antibiotic and anti-inflammatory, if needed, to help treat.

No, please do not instill anything into your dog's ears without your veterinarian's advice. Your dog also needs an ear exam to determine whether the ear drums are intact before any medicine is instilled into the ear/ If the ear drums are not intact, any medication getting into the inner ear can cause serious inner ear problems such as balance issues, etc. Please visit a veterinarian with your dog and bring the results of the sensitivity report with you. Your vet will then be able to examine your dog's ears and decide which route of medication is suitable. Never instill H2O2 into a dog's ears.

No, do not put hydrogen peroxide in Jazmine's ear, that will make it so much worse. It sounds like she has a bad ear infection, which you cannot treat at home. Please take her into a vet now to get this treated.

It sounds like Pluto has an ear infection and I would recommend to take him to the veterinarian as soon as you can. Infections can be painful, can damage the ear drum, causing hearing loss and can even cause calcification of the ear canal (which is very painful). The vet will look at a sample under the microscope to determine what type of infection is present and what kind of medication is needed. Pets have have chronic ear infections may have underlying allergies or endocrine disease which causes them to be more prone to getting an infection. Talk to your vet about exploring these options. I hope this helps and thank you for Petco Pet Education Center, formerly Petcoach.