A Texas zoo is welcoming its first ever Sumatran tiger cubs. Sisters Barani and Malu were born to first-time mom Ndari and dad Rakan at the Fort Worth Zoo on July 1 and weigh about 18 to 20 pounds each 13 weeks later. Read more: ↧ Texas zoo welcomes first Sumatran tiger cubs A Texas zoo is welcoming it first ever Sumatran tiger cubs.