i have mice and the only noise that they make is their running wheel.....it squeeks real bad but they make non-squeak ones....for the most part it isnt to bad...we live in a 15X20 cabin (meaning one big room) and u can hear them squeak to eachother but for the most part they dont make a noise.....my friend who owns rats have them in their kids rooms and they seem to be very good....sometimes pets will adapt to their humans/owners schedule.....