Hes a beautiful dragon for sure, healthy and active though throughout the vid i was wondering about the lack of substrate?.
Hard surfaces have been shown to course problems with reptiles feed and claws over time. As you could probably guess, i would recommend a washed sand, beach or play sand is fine. It also can not be good psychologically to be in a huge open space with flat hard surfaces all around. Im not having a dig at ya but do be believe there is always room for improvement. If your worried about sand or simply don't like it, try a mix of sand and coco fiber/plantation soil.
I had to show DH Weetbix... lol. He even grinned at the adorableness. I'm still amazed at his energy! Ryuu only runs around like that when she's in the living room lol, but as soon as she realizes you're watching her, she freezes. lol