Why is my Shih Tzu's lumpy black mole bleeding and oozing pus?

It could be an infection, cyst, or possibly a hystiocytoma. The best thing would be to have a vet take a look at the lesion. Your vet can do a needle aspirate to help diagnose and then determine the best way to treat. He may need an antibiotic, anti-inflammatory, or it may need to be removed. Hope he feels better soon!

It sounds like this is likely to be a cyst of some kind, but could also be an abscess, localized skin infection or some other type of skin growth - pus from an abscess would usually have an odor to it, but not always. You can clean the area thoroughly with warm water and soap, and it's fine to use topical antibiotic ointment like Neosporin as well. But in order to find out for sure what it is and get it treated more effectively, you will need to take your dog to a vet for an exam. He/she can take a sample of the white substance for analysis to help determine what it is, and will advise you based on the results whether it needs to be treated with oral antibiotics or other medication, or if it needs to be surgically removed.

It looks like it could be a sebaceous cyst. You can try to squeeze it if you'd like but do not use tweezers - that would really hurt. If it does not resolve or you are uncomfortable squeezing it just have her to your vet for an exam.

It could be that Zabby has an infection, but I see that she is unspayed and it could be that she is suffering from mammary tumors that have ruptured. It's quite serious that she has black thick pus in this area, and she should see a vet right away. The vet can diagnose what is causing this pus and can discuss treatment options with you. In dogs, there is a 50% chance that any mammary tumor is malignant, and surgery is needed if the tumor is malignant.

It could be an infection, cyst, or a mass. Have your vet take a look at it to determine the exact cause. Your vet can do a needle aspirate to diagnose and then determine the best way to treat. She may need an antibiotic, anti-inflammatory, or it may need to be removed.

Thank you for submitting your question regarding your Shih Tzu. Based on your description, he may have an anal gland abscess. I recommend that he sees a veterinarian today. If an infection is present, he may need surgery to treat the wound. He would also be sent home with medications such as antibiotics and pain medications. In the meantime, place an E-collar on him to prevent any licking of the area. I hope this information helps!

This could be a bug bite, a benign cyst draining, or a local infection. I would recommend to clean it with a a mild soap and water and put some neosporin on it. I would place a cone collar on him if needed to prevent any licking. I would contact your vet to ensure he doesn't need any oral antibiotics. I hope this helps!