Loud noises? The only noise I've heard a squirrel make is the "Tsk, tsk, tsk" -sound while agressively staring me down and whipping their tail and it's not by any means loud.
I love squirrels but Capybaras are the most different thing possible. I’ve played with some and they’re so mega chill, I can pet em and feed em by handing things to them… squirrels won’t even be on the same side of the tree as me.