Wow I was honestly not expecting a response at all, let alone one so fast! Had to wait for the old man to stick out his tongue (which is usually sticking out all the time)
Please ignore the grossness of the rug
Hello! I know this question is almost 4 years old, but I was wondering if your dog's tongue stayed dark or if it was a temporary thing. Our bulldog is 8 and I just noticed this same thing today. Sorry to reply on such an old post.