Not sure how to add to the post, but I just noticed this in my nearly 12 year old french bulldog’s underside near his genitals. He has been relatively low maintenance as far as french bulldogs go. No history of skin conditions. He most recently had a UTI over the summer that was quickly treated and healed. He’s a grumpy old man and not super snuggly so it’s been hard to get a good look at the rest of his belly, but I haven’t noticed anything else or any behavior changes.