Rarer than rare! An uncommon white tiger mated with an even more scarce white lion. The result? The birth of the world's first-ever white ligers. 

Cute and very innocent, Apollo, Samson, Yeti and Odin are unaware of their extreme uniqueness. Four of a kind, they could grow to be the biggest cats in the entire world, OMG Facts reported.

There are only around 300 white lions and 1,200 white tigers left on the planet, so the cubs' father Ivory and mother Saraswati are extremely rare in their own right. Brought together at Myrtle Beach Safari in South Carolina, they have produced the first ever white lion-tiger hybrids - commonly known as ligers.

Producing a liger is a critical cross-breeding operation. But Dr. Bhagvan Antle and his team were successful in producing the beautiful little creatures.

There are approximately 1,000 ligers in the world - mostly in captivity - but none of them are white. Nonetheless, there is a very tiny possibilty of a white lion and white tiger meeting in the wild and producing an offspring. 

Meanwhile, Hercules, the world's biggest cat, is an uncle to the white cat brood, Daily Mail reported.