Red spot on chin

Hi my dog has this red bump on his chin. It looks almost raw. Doesn’t seem to be bothering him too much. I’m just hoping it’s not a mass or anything. Any ideas what it might be? 

Hello!  A 'mass' is simply tissue that takes up space - the concern is whether a mass is, for example, inflammatory (i.e. a reaction to something) or cancerous (which can be benign or malignant).  Sometimes in that place, a combination of allergy and drool, or even a tooth rubbing, can lead to some interesting lesions. Your vet would examine the area for clues and may propose trial treatment to see how it responds, or may require a sample in order to assess the cell-types within the lesion.  It's well worth showing to them (inflammatory sounds mild, but sores can get wider very quickly sometimes).  Please do let us know what happens next.