Hi, similar question here, my female hamster Mauve, 3 months old, has arrived 2 weeks ago, has a playpen, lots of toys, enrichment, about 10/12cm of bedding since is the biggest cage they had at the store, but she keeps biting the cage, I offer cardboard when she goes crazy, let her free roam the room, she escapes the playpen, and even though she has lots of things to chew on, she still goes insane with the bars, I haven't slept ever since she arrived and don't know what else to do, she's pretty active in 3 slots of hours a day, and doesn't bite us, but she keeps biting the cage and it's making a mark on her nose. Any suggestions please?