Campell hamsters are closley related to the white russian dwarf hamster  ,they can be sometimes cross breed but its not good as it does not help and keeping the two rodents in there own catorgorie ie winter and campells .campbells are first known to have arrived in the uk in 1964 and were first used for experiement purposes.campbells have a thicker white woolly feeling coat to other hamsters .there countrys of orgin are northen china ,mongol,central asia ,southern siberia .