It is the coloration of the fur.
NO!
3-4 years commonly, and on the rare occcasion 5 years. And by the way, it's GERBILS, not GERBLES
Yes DEFANTLY a rats tail is way longer a gerbles is only as long as you thumb-nail (mostly)
it's basically a hamster just with a tail on it
NO NO NO NO NO NO IT NEVER CAN AND NEVER WILL
it depends on the person, pet, and care you give it.....
no, but they generally like it when you rub your finger on their belly sometimes.
The brown spot is the vestigial eye (represented by a white dot) located between the eyeballs.
I think the brown cow was spot
That is a freckle.
They are yellow with brown spot
A mole