It obeys, but nothing is our out of the ordinary. It yawns, and you notice that it had red on its throat

I reach out with my other hand slowly to touch it's neck stopping a bit away, still massaging with my other hand "Can I see what it is?"

It whines

"Nod or shake your head slightly. A whine could be a go ahead or a complaint."

It seemed to recoil its neck as if in pain. It coughed slightly

Forgot to ping

I push it's chin up and feel gently around the red area

It roars, and backs up in pain.. this isn't normal behavior

I stroke it reassuringly, not touching it's neck again but looking closely at what it is

It looks like it might have had allergies to something it ate