Saurian

Animalians with dinosaur features use this archaic combination of screeches and screams, but most keep it to themselves or in their homes, since the sounds can be disruptive or frightening in public settings. But the language persists as one of the oldest linguistic forms, far outdating Common, Halphard, and even Elven.
Saurian is included in the Gether Guide to Languages on DrivethruRPG:
https://www.drivethrurpg.com/product/328473/Gether-Guide-To-Languages