Gerbils are desert burrowing animals, so I would think (I am not a biologist) that they have small ears to help reduce sand getting in their ears. They originated in Mongolia, which is between China and Russia (the old Soviet Union for those of us who are older), so it is colder there, so smaller ears would reduce heat loss as well. They are desert animals, but not all deserts are cold. :)
a rat has small ears because it is a small animal
A rabbit with small ears has small ears and a rabbit with big ears has big ears.
gerbils mostly live in pairs or small groups so it depends on the size of the cage and if the gerbils know each other
not very big because i have 2 gerbils and my cage is small
no gerbils don't have feathers, they have fur
One reason is gerbils have furry tails unlike mice having naked tails. Mice are a little smaller than gerbils. Third gerbils are much more active then mice. And finally mice normaly have much bigger ears than gerbils. I hope this helps.
no the ears are small
not unless you get a really small stall
Small ears don't get scratched by brambles.
Polar bears have small ears because they are special.:)Polar bears have small ears because they are special.:)
That's just the way God made them.
Gerbils sleep when ever they get tired. They are not nocturnal like some other small rodent animals.
their ears their ears their ears