Amurskaya, a Siberian tiger, licks one of its cub at the St-Felicien Wildlife Zoo in St-Felicien

Amurskaya, a Siberian tiger, licks one of its cub at the St-Felicien Wildlife Zoo in St-Felicien, Canada on July 18, 2012. The mother, Amurskaya, gave birth to her two cubs on May 24, 2012. The Siberian tiger is also called Amur tiger. (Mathieu Belanger/Reuters)

Amurskaya, a Siberian tiger, licks one of its cub at the St-Felicien Wildlife Zoo in St-Felicien, Canada on July 18, 2012. The mother, Amurskaya, gave birth to her two cubs on May 24, 2012. The Siberian tiger is also called Amur tiger. (Mathieu Belanger/Reuters)