TORONTO -- Two giant panda cubs born at the Toronto Zoo are now taking solid steps.
The zoo says the cubs, who turned four months old on Saturday, are becoming "extremely mobile."
It has released a video showing the pair moving around an enclosure, with one of the cubs even clambering over a small log.
The cubs and their mother, Er Shun, are housed in a maternity den which isn't open to the public.
Er Shun is on loan from China. She and a male panda named Da Mao arrived in 2013 and are slated to move to the Calgary Zoo in 2018.
Staff have said the cubs will live at the Toronto Zoo for about two years and could return to China or could move with Er Shun when she relocates to Calgary.