Because their teeth never stop growing. You should make sure your gerbil has something like a wood block or a hard treat to chew on to keep them from getting too long.
Gerbils' tails should be as long as the gerbil itself. If they don't, their balance will be disturbed.
You can give them different chew toys for them to chew on and it should keep the teeth at a decent length.
No, not usually.
No they don't Gerbils are rodents, which when translated means "to gnaw" Gerbils teeth are not in sets like humans, but continue to grow, which is why it is important for a gerbil to have wooden toys for it to chew to help keep their teeth from overgrowing
not at all. its actrully good for them too. gerbils teeth grow continuously and when gerbils eat cardbourd it help knaw them down.
Male gerbils can be neutered, but it is not recomended. Female gerbils should not be spayed. In general male gerbils should not be neutered unless there is a good reason for it.
The correct teeth clipping pliers are available from good pet shops
Sharp teeth. About the same as a mouse defending itself.
No i should not
You should wait until their eyes are open. Or when the mother will let you near them.
Dry cat food. Plus it is also good for them and their teeth.