Hello,
Based on age my first suspicion is that this might be a papilloma. If it is there might be more that arise. They typically are found around the mouth. They will resolve on their own but they can be spread to other dogs so your dog should be kept at home until they go away.
Your vet is correct that the only way to diagnose them is to remove them and submit the tissue sample to a pathologist.
Ask your vet if they think this could be a papilloma virus?

We have had a few patients that resolved this with a neuter. Have you talked about that? We have a bartered surgeon who can perform this if neutering doesn’t resolve it.

Hello,
The answer for this comes in a few parts.
First, yes, I suspect I have had some patients die from heart failure secondary to grain free diets. These were confirmed as suspected by the cardiologist who saw them after me. So. Yes. I am concerned that grain free contributes detrimentally to heart disease and death.

Second was heart disease confirmed by your vet? Or a cardiologist? I see far more bulldogs dying from brachycephalic syndrome disease than anything else. By a lot. I had three die this summer from inability to breathe after getting too hot or too overexerted. Unless your dog was diagnosed with a heart condition I suspect it was the head and face that caused the issue and not the heart. That’s just been my experience over 20 years in practice.