Trapped
'That's a damn monster!' His previous opinion of the dog before his eyes changed to a new one that portrayed a massive monster ready to devour everything on its path.
Seeing that the fight was still ongoing, Lux decided against acting right now, even if he had the chance to.
'That dog clearly has an advantage over its opponent, but the Forgotten Beast is already regenerating its body and could just keep doing that until the dog loses its energy.'
Analyzing them for a while, it was quite obvious that the Dog's forte was in its speed and powerful bites that managed to get a good chunk of the Forgotten Beasts body every time it attacked.
It was still unknown why the Forgotten Beast was so passive and didn't truly attack its opponent at all, only defending when necessary, but Lux wasn't too bothered by that.