Once my my two rats are comfortable sitting in my shoulder they usually make a weird noise in my ear.. sounds like they are grinding their teeth or something. I figured alot of rats do this I just have no idea what it means... anyone know? Thanks!
bruxxing is like a cat purring (plus they keep their teeth ground down), but like a cat it can also be a stressed/pain thing as well. You have to know your rats to figure out if its the nice calm happy brux