Ask Dr Claire

My dog has a blue black spot on his tongue. Should I be worried?

Pigmentation of the tongue is quite common in dogs, and they can develop pigmented spots later in life. Spots of pigmentation are not raised or ulcerated, they are flat and they don’t grow. Any pigmentation should be monitored. Taking a picture and keeping records of its size is a good way to help monitor.

If the spot is raised or ulcerated, or changes in size or shape, it could be something more dangerous such as a cancer on the tongue.

Biopsy is needed to reach a definitive diagnosis of the spot.

If you’d like to chat in person, you can book a live video call or start a chat to discuss in more detail, as soon as possible.

We’re here to help!

Chat soon,
Dr Claire