Keepers `` heartbroken '' as tiger cub found dead in enclosure at London Zoo . But on Saturday , keepers raised the alarm when they could no longer see the young tiger on cameras inside its den ; a search of the enclosure revealed the animal 's body . Newborn animal believed to have drowned in pond after mother carried it outside . 17 years cub was first Sumatran tiger to be born at zoo in Three-week-old .
Keepers `` heartbroken '' as tiger cub found dead in enclosure at London Zoo . Newborn animal believed to have drowned in pond after mother carried it outside . 17 years cub was first Sumatran tiger to be born at zoo in Three-week-old .