LOL. Yeah, if they get made or feel threatened they will make a sound something similar to one of those school electric pencil sharpeners. And they do bark, though I have not heard one do so yet.
When properly trained, they are known to leap or glide long distances to get to the person(s) they are comfortable with. They are also known as 'pocket pets' for obvious reasons. They are nocturnal, but I kept him in his cage in our bedroom last night and he never made any noise that disturbed me or my wife.
Now my dog (a 8 year old dachshund) thinks its some kind of scooby snack or something. When the glider makes his pencil sharpener sound he (the dog) gets all kinds of worked up and excited.
I'll get some pics up soon. Im working on hand training the glider so that he is comfortable around me and dont have to worry about him leaping to the floor trying to make a mad dash with the dog in hot pursuit trying to figure out what in hades has invaded his home.
