They can be. It just depends where you're getting them and their purpose for being sold. ex: rats sold for food purposes are very unlikely to have their shots. Pet store rats don't tend to have their shots, but it depends on the pet shop. I believe the ASPCA carries only vaccinated animals, so if you want a rat with all it's shots, that's where you should go.
The White Rats was created in 1900.
no
The truth is that not all rats are grey. Some are white or blackish.
No - the rats colour has nothing to do with their behaviour.
No.
White House in D.C.
They can be white, brown or grey.
White House in D.C.
inbreeding has resulted in these rats being "twins" of all the others.
white, like people when they get old... they turn white
Yes, rats can eat pretty much anything people can eat.
its not all pet rats its just the ones that are black and white because it looks somewhat like a tuxedo