WATCH: Leopard mom stands up on her hind legs to look for her cub. "I was on a game drive along the Serengeti. In the area known as the Maasai kopjes in central Serengeti, we met this leopard with her cub of several months old. We had other cars also on the scene. The leopard mom was coming down from the rock outcrops but they lost each other when her cub tried to avoid the vehicles. Then the leopard crossed the road in front of us, after which she could not see her cub. That's the reason she ke