My little man's face has continued to swell and as we washed it this afternoon some pus started to come out. It's obviously very sore for him and a call to the vets was necessary.
He's started his antibiotics tonight so hopefully within 24 hrs we will see a difference. Poor boy.
I guess we'll never know what caused it, but I am tending to agree more with Steve that it's not a bite as the hole goes up in the direction of the arrow in my photo. Had it been a tooth it would be going down. Ah well a mystery, we heard and saw nothing .. very odd.