I just saw this on my dog's paw. He's a 12 year old boxer-lab. The vet is closed now, only emergencies, and th dog isn't in pain or limping. In fact it doesn't seem to bother him at all (he's not licking it) which is why I just noticed this.
We'll take him to vet as soon as possible next week but I can't stop worrying what it might be. Dr google isn't helping!!