Hi,
My beardie hasnt made any sounds but i would think they would if they are extremely mad/upset they would start making hissing sounds. If they have some kind of respiratory infection they would have some wheezing/coughing sounds too.
When they lick their chops at mealtime it sometimes makes a sound. If they get angry they can make a slight hiss if they clear their lungs at once. Other than that they are quiet and stealthy. They are visual communicators rather than verbal.
Mirage came out of brumation on April 26. He was doing great. On May 2 he started acting funny. We just redid his tank, and he keeps going into one of his hides. He just lays there. He shows no intrest in food. HELP!