dont know whats wrong with my gerbil

Question
my little sister put my gerbil in a tupperware container and started spinning the gerbil inside it. He seems to be walking fine outside the aquarium, but once he gets inside he starts walking around like he cant walk on his two right legs. is he just traumatized or is he injured?

Answer
Hi,

He is probably highly traumatised and i would advise leaving him alone for a couple of days to recover. The chances are this will also make him very nervous, so you will have to make sure you earn his trust again, and don't let your little sister get to him again as not only could he be traumatised he may be severely injured!!

Charlie