This video from Russia says about itself:
Zolushka Is the First Rehabilitated Amur Tiger to Give Birth in the Wild!
10 December 2015
WATCH new mom Zolushka, the first-ever rehabilitated Amur tiger to give birth, and her young cubs playing in the wild. Learn all about this new family’s remarkable story of success here.
Zolushka (‘Cinderella’ in Russian) had been found as a cub, almost dead, after poachers had probably killed her mother. She had been freed in 2013.
See also here.
Dear Kitty. Some blog 