2020 updates by Cathy Bickel
Gerbils are generally, but not strictly, crepuscular, meaning they are awake at dawn and dusk. They cycle in and out of active and sleeping periods throughout the day and night, with the heaviest activity occurring in the evening. Pet gerbils are very sensitive to human activity and will quickly learn at what times of day they have a better chance of being fed or played with. Their observations of household routines may cause their patterns to vary.