Watch | Miracle cubs enjoy playful moment

The Zoological Wildlife Foundation (ZWF Miami) released an adorable video of their newest tiger cubs, siblings Harvey and Hailey, exploring an indoor playroom. Harvey and Hailey are the offspring of Metredes and Titian, the foundation's tigers. They were born on September 6. The cubs' birth came as a surprise - the mother, Metredes is 14, her age in human terms would be late 50's. Tigers typically live 14 to 18 years. Currently on a diet consisting mainly of milk, the cubs will be gradually introduced to meat. Tigers are listed as an endangered species by the International Union for Conservation of Nature (IUCN).