Being a Were-animal isn't what the stories, books, or even fanfiction talks about. People are different with when they go full beast mode and some just do it for the hell of it. Unfortunately for Xiaotian, that wasn't the case.
He had just gotten back home from training with his father Sun Wukong, or well...that is what he was supposed to be doing. Instead, Wukong just had him 'help' clean his hoarding room and organize it. Not only was the great sage not helping, he even refused to let Xiaotian leave to go meet up with his mate at the arcade for a date night!
Now, he was pacing around the small apartment that he could bearly for in now. Having lost control when he got home as he shifted into his beast form. Think of it as a in-between stage from his normal Simian self to his Kaiju form. His three tails thrashing with each step as he expected another noise complaint from the downstairs neighbor in the morning.