We have 2 Russian dwarf hamsters, very friendly, fast and cute.
The last 2 nights we've seen one of them scurrying around upside down, hanging onto the bars on the roof of the cage! He seems to be trying to chew or squeeze through them!
It's the cage which Pets at home recommended for dwarf hamsters but I'm worried that it's going to be able to escape!
We don't have a clue how he's getting up there...he can't be climbing up the walls of the cage as they're smooth plastic. Help!