hiro ryuu is how you pronounce it. go to some Japanese sites to find out more!
You may say 龍がいます
The Japanese word for Dragon is "Ryuu"
Doragonfurūtsu
ドラゴンストライキ
'Kinzoku no ryuu'.
ginryu
ryu no ha
ryu-ken
Kagami Ryū
Doragon iki
to say dragon in Japanese is 龍 and it is read ryuu hope this helps :)
'Small dragon' would be 小さい竜 (chiisai ryuu) in Japanese.
"chi", and "ji" means blood ryu means "dragon"