It's more clear for the dragon when he can see fire at the corner of his eyes. It looks to be from candles, or torches.“MMMMPH!” *I cried out in a panic not sure what was going on. Whatever it was I didn’t like it I started to wiggle trying to get free to no avail the ropes were too tight.*
Either way, this is not going to end well.
... But, as the dragon struggles and cries out, he could feel his teeth biting into the ropes in his mouth. A few of them even fall apart.