A critically endangered Sumatran tiger cub made its way into the world at London Zoo just in time for Christmas. Ten-year-old mum Gaysha gave birth to the cub at 2:19am on Sunday December 12. Mum Gaysha can be seen cleaning and feeding the rare newborn just hours after the birth - before the determined youngster takes its first wobbly steps on the soft straw of their behind-the-scenes den.