What causes a sore with a hole and redness in my dog's ear canal?

It may be infected as a scab has formed and trapped the bacteria. I would gently soak the area and clean it with soap and water. Then place neosporin on it. I would also make an appointment with my vet to to have it checked to see if oral antibiotics are needes

Thanks for using Petco Pet Education Center, formerly Petcoach! If it truly was not there yesterday, this is most likely to be a bug bite (tick, mosquito, spider, bee, other), dog/cat bite (if he was wrestling with any other friends lately), or some other random trauma (crashing through a spiky bush or catching it on something). If you're unsure how long it's been there, add cyst, benign or malignant tumor, and others to the list of possibilities. I'd slap some neosporin on there twice daily and watch it. If no improvement in 3 days (or if worsening at any time), it's time to see the vet. This goes for any accompanying facial swelling, vomiting, or diarrhea, as these could be signs of serious allergic reaction. Best of luck to you and Lucky!

This could be a skin infection caused by a fungus or bacteria or and old injury or bite and in worst case scenario it could be a tumor. Please have this examined by your veterinarian. If he suspects a tumor, he will likely want to remove it and send it in to determine whether it is malignant and your dog needs further treatment. If it is an infection your dog may need an antifungal or antibiotic ointment. It may just be a scab from an old wound and might need no treatment. Your vet will be able to determine that with a hands-on exam.

Thank you for submitting your question regarding Red. I recommend that he sees his veterinarian. He could have an ear infection causing the red bumps. This is typically accompanied by shaking of the head, scratching the ears and discharge coming from the ears. If this is not the case, an allergic reaction could be to blame. His veterinarian will examine him and determine the best course of treatment for him. I hope this information helps!

Because it is localized to the one spot than you can alternate neosporin with cortisone cream to help keep it clean and take away some of the itching. It does not appear scarred so hair should regrow when it heals. If it doesn't improve in the next day or so your vet can prescribe oral medication to help with the itching and infection

It seems a small trauma, which is healing fine and at the moment (looking at the pic) I cannot see any sign of infection. Disinfection can be done at home with very diluted hibiscrub or betadine or salted water baths. Buster collar may be useful as well to avoid any scratching (if any). Hope this answer was helpful, but please do not hesitate to contact us again on the forum or by requesting a consultation if you have any more questions or to discuss it any further. If this answer was helpful please let us know, this will be used to improve our service!

It looks like your kid has a pretty severe ear infection there. The redness is inflammation and the gray area is thickening of the external ear canal from chronic inflammation. What would be best would be for your pup to be seen by your family vet for an ear exam and cytology. In order to treat this appropriately your vet will need to know if there are bacteria (and what type) or yeast or both in the ear canals and if the eardrum is intact. An anti inflammatory may also be needed because of the thickening. If ear infections are a chronic problem for your pup underlying allergy may also need to be explored. I hope this helps and thank you for using Petco Pet Education Center, formerly Petcoach!