Now, granted it's hard to make a dance for a dragon, and seriously that model must be very hard to work with, but let's try to think of potential dances for this girl eh? Ready set go!
the Wyrm maybe...
If Dragon Shyvana didn't do the Chicken Dance, I'd be sincerely disappointed. Seems perfect for her.
Maybe she flies up flapping her wings and does some spins in air kind of like nautilus's dance? That would be kind of cool.
Honestly she should to the cuban shuffle.
Huh I've never tried dancing while in dragon form with Shyvana. I know for a fact that both Nid and Elise have dances in their alternate forms but maybe it's because they're not actually ultimates the way Shyvana's Dragon Form is. I guess Riot just figured you wouldn't press dance in dragon form because you SHOULD be either engaging or escaping with it.
PS Nid's dance in cougar form is her chasing her tail and Elise's is her swinging her spider legs.
shyvana looks like she's twerking when she dances =.= 
Maybe she could do the dragon of the sun dance from avatar last air bender.
Neither does Valor :(
