My blue terrier previously of good character started

Hello. This is Dr Mike. I have been practicing for 19 years and I will be happy to help you today with all of your questions. First, I would like to start with a few questions to help me better understand your case.

Is he neutered or not? Any change in eating or drinking ?

Can you send the picture of the skin lesion by the ear to view ?

Yes they came through, I will review now, thank you

I totally understand about his good breeding potential and not neutering. Many times as the male dogs get older, they produce more testosterone and they can become more aggressive with time. Just such that you are aware of this. Also if they are painful or do not feel good, this can make things worse also. Did this aggression only start when these skin lesions appeared?

Will he let you touch them? Or are these spots very painful and sore?

If we are more aggressive because of pain, we can treat and address the cause of the pain. I will send an over the counter protocol we can use for the skin infections now. Then I will discuss more the behavior.

It appears to be a skin infection. This area of the body is moist and this can allow the normal yeast and bacteria that colonize the skin to get to higher levels, then this will set up these small areas of infection. I would recommend to get a shampoo that has chlorhexidine and miconazole, one type is called Malaseb. Then a topical spray called Micochlor that you can spray on the area 2-4 times a day. Both of these products will kill the yeast an bacteria. They can be found at pet stores or ordered on line like on Amazon. The chlorhexidine will kill yeast and bacteria and the miconazole also will. This can help a lot to stop the itching. When you bathe let sit on for 10 minutes. The sprays can be used 2-4 times a day as needed. There is also a topical spray that has lidocaine and hydrocortisone in it that you can spray onto the red and itchy skin also. This will take down a lot of itch and inflammation also. You can do this 2-4 times a day as needed also.

If we notice that we keep getting more aggressive in time and unpredictable, then looking at neutering may be needed. Dogs reach sexual maturity at around 2 years of age. We do not have good predictable medications we can use to stop aggression, especially when we have high levels of testosterone and are not neutered. I would say that if we can start with the treatment of the area we know is causing pain, this will be helpful. However always be careful when dealing with dogs that are touchy like this, you may want to also look at a muzzle that you can use while trying to clean and treat the hot spots.