Yuzz was the native language of the Yuzzem species from Ragna III. It was a language of growls, roars and mewls, similar to Shyriiwook. In fact, it was considered almost unpronounceable by other species, except for Wookiees, who could easily learn Yuzz.
Most Yuzzem were fluent in both Yuzz and Basic, although they were only literate in their own language. Unlike Wookiees, Yuzzem were biologically able to speak Basic.