They're not actually hairless, as they have a fine dusting of hair along the entire length.
It's a adaption to allow rats to pump large amounts of blood into the veins along their tails to cool their body temperature down. It's quite effective.
Most rats, if not all, have a predominantly hairless tail, with few wisker-like bristles on them.
No, many hamsters have hairless tails or tails with very light hairs on their tails
Hairless rats live as long as normal rats do; 2-3 years with proper care.
Sure you can :)
The hairless gene is a genetic mutation that occured naturally, and was bred purposefully. There are indigenous rats in some areas that have the hairless gene, but they are rare since natural selection does not favor a rat being hairless.
No. Guinea pig food does not contain the right balance of nutrients for (hairless) rats. Hairless rats eat the same diet as normal rats. A safe food would be "lab" blocks, which can be found in any pet store or Wal-Mart.
their tails their tails
Haster food, I think.
True hairless rats (they have no whiskers) are rare. The type you are likely referring to are those that are bred from two rexes (curly haired rats). Hairless rats should not be any different from haired rats, other than the lack of hair of course! You'll find each rat has their own personality anyway :)
Rats, regardless of gender or breed, have tails as long as their body.
Hairless rats covered in gravy and pickles.
Mice and Rats are rodents.