The wolf-dog brothers, each time they encountered the Wolf King, looked as though they were sworn enemies turning green with envy. Despite once being of the same species, they now couldn't stand the sight of each other, facing off with a ferocious roar through the bars of their cages each time they met.
The reason for this didn't need to be spelt out for Suming to guess.
The Wolf King probably thought, "You bunch of traitors have abandoned the glory of our ancestors to grovel and fawn over humans. How dare you parade in front of me, the shamelessness is utterly unbearable!"
As for the wolf-dog brothers, "You might be tough, but you're still trapped in a cage, all bark and no bite, what's the point of putting on airs!"
It was the Wolf King's pregnant wife, who was about to give birth, that actually seemed to have a fairly good attitude towards the two wolf-dogs, making Suming feel somewhat guilty on behalf of the Wolf King.