In March 2012, Amur tiger Katja gave birth to three Amur tiger cubs at the zoo. The species is so highly endangered (there are an estimated 350 individuals worldwide), the births represented a 1% jump in the global population. In 2014, it became necessary to separate Vasili and Samkha, the two male tiger cubs, now almost full grown, from sister Kira and mom Katja (12 years old). Based on the Species Survival Plan recommendation, which manages genetics for future breeding, they were moved to Assiniboine Park Zoo in Winnipeg. In May 2018 Vasili was moved to Toronto Zoo in Toronto.