Heres a picture of my old gerbils. The white one is Squat (Yes, her sister was diddly..don't ask..) The brown one was Ginger who I later found out was a male (I actually thought it was a female and though it was dying..turns out she was a he..I was young!! )
Squat was 4 before she died, I think thats kinda old for gerbils?? I miss them, I'd love to get more, but -ahem- I can't
Not a very good pic, but anyway. We kept them in the blue thing cause they made SUCH a mess by kicking they're chips out. I learned the hard way how high gerbils can jump. They (diddle and squat) escaped a few times, we need a squirrel trap once to get one of them. So, I started to put the cage in the blue thing.