My dog has a hard, scabbed sore on his cheek that bleeds and oozes.

I see that Tyson is a boxer, and they can be prone to mast cell tumors. Of course this could be a scab, but without seeing him in person, I can't say for certain. Any suspicious lumps should be examined by the vet. The vet can perform a test called a fine needle aspirate on it. To do this, the vet sticks a small needle into the lump to get a sample of its cells, and examines the cells on a slide under a microscope. It's usually painless to the animal, and relatively quick to perform. Once the cause of the lump is diagnosed, the vet can discuss treatment options if needed. Give his vet a call in the morning to make him an appointment. I hope this helps.

He should be examined by a vet to determine the cause. He could have an infection, cyst, mass, etc. and your vet can do a needle aspirate, if needed, to help diagnose and then determine the best way to treat. He may need an antibiotic and and anti-inflammatory to treat the problem.

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.

I am sorry to hear about Daisy! Due to the size of this lesion and the fact that it isn't improving, I would recommend taking Daisy to the vet for examination of this swelling. I would be concerned that we could have a bacterial infection like an abscess, that this could be a spider bite or other insect bite, or possibly even a mass/tumor. The vet can examine the area and may try to aspirate the swelling (use a small needle to remove any fluid present or collect cells that may help identify the cause of the swelling and the best treatment). Best of luck with Daisy!

Thank you for submitting your question regarding Chevvy. I recommend that she sees a veterinarian if the mass is growing and changing. A disinfectant solution will likely be used to clean the scab off and see what is underneath. If it is a wound, then antibiotics may be needed. If there is a growth, her veterinarian will likely sample cells to evaluate under the microscope. I hope this information helps!

This looks to be a benign skin mass or cyst. Repeated trauma from scratching is probably causing it to open up and bleed. These usually do not need to be removed unless they become infected or are irritating to the dog. If the mass changes then I would be concerned. I hope this helps. Thanks for using Petco Pet Education Center, formerly Petcoach. Best of luck.

Thank you for posting the picture. It is really helpful. This lesion could be many things, and an examination with a veterinarian would be the first step toward a diagnosis and treatment plan. In my experience lesions such as this one in a young dog are usually either a histiocytoma, eosinophilic furunculosis, or ringworm. All of these can pop up quickly, and they are all treated differently. A histiocytoma is a benign tumor that will usually resolve within 4-6 weeks. The others need medications. A veterinarian can do a needle aspirate to help make the diagnosis and determine what the best treatment plan should be. Best of luck and I hope Tank improves soon. Thank you for using Pet Coach.