What's this non-itchy brown spot on my dog's skin that won't go away?

Thank you for using Petco Pet Education Center, formerly Petcoach! From the picture, I can see a small, flat, brown area that is slightly irregular. Though I cannot diagnose Mindy without seeing her in person, I would be happy to share some possible causes and advice on next steps. This could be a benign growth, similar to a mole or freckle on a person or a malignant growth (cancer). Several types of cancer can affect the skin, particularly lighter areas that have less hair. The area does not seem to be infected, as there is no discharge, redness, or swelling, but a bacterial or fungal infection is a possibility. You can have Mindy evaluated by a veterinarian who can take a small piece, or biopsy of the area to definitively diagnose the growth. This may require light sedation or general anesthesia to completely remove it. You can continue to monitor the area for an increase in size, margins, change in color, or additional discharge. If you notice any change in Mindy, you should definitely have her examined by a veterinarian as soon as possible. I hope this helps!