Toronto Zoo celebrates panda cubs' first 100 days

A giant panda and her cub are seen on the cubs' 100th day, in Toronto on Wednesday, Jan. 20, 2016. (Toronto Zoo)

The Toronto Zoo is celebrating its panda cubs' first 100 days of life, a nod to an ancient Chinese tradition.

The black-and-white twins were born at the zoo on Oct. 13, 2015, to a female panda on loan from China to Canada for 10 years.

The 100-day celebration is a Chinese tradition built on a belief that when a child reaches his or her 100th day of life, he or she has "survived the risky fragility of infancy," the zoo said in a statement.

In honour of the cubs' heritage, the zoo marked the occasion by releasing a video of never-before-seen clips of the bears. The three-minute video is a compilation of footage captured from the cubs' births to their shaky first steps.

"The Toronto Zoo is very honoured to be participating in the Global Giant Panda Conservation Breeding Program and extremely proud of the births of Canada's first giant panda cubs," zoo CEO John Tracogna said in a statement Wednesday.

The zoo said it hopes to make the cubs available for public viewing in mid-March.

The two adults and two cubs are slated to move to the Calgary Zoo in 2018, where they will remain for five years.