Da Mao ecstatically welcomed the year’s first big snowfall at the Toronto Zoo on Monday. Security cameras caught the panda, who’s dad to 1-year-old twin cubs, somersaulting off his play structure and down a hill in his enclosure — and then climbing back up the hill for more fun in about 6 inches of snow. Later, the cubs followed in their dad’s footsteps, adorably frolicking in the snow.