I have no idea what that might be and beings it doesn't seem to be bothering him, I'd think waiting is safe. Watch him, if you notice any signs of distress...go to the ER. Most likely this has been there for awhile and was just noticed. If it were an abscess, I'd think it would be painful to touch and he wouldn't be able to eat normally. I'll say a prayer for him and hope it's something easily treated. Try to relax, I know our minds go in overdrive whenever something is amiss.
__________________ As Ever, Kathy 
Intruducing Bentley  Winston and Spencer: RIP My Sweet Angels |