When A RARE White Lion Has Babies With A Rare White Tiger The Results Are Scary-Cute.

It's not every day that the zoo greets a new animal -- each and every new member is a special occasion for the zookeepers and the guests alike. However, this particular new arrival (or should we say, arrivals) is something even bigger to celebrate: These four cubs are unlike any that the zoo or the world have seen before.

They're four liger cubs, spawned from the not-so-unlikely but rare pairing of a lion and tiger. You may have thought these animals were made up by Napoleon Dynamite or a fantasy novelist, but they're definitely a part of the animal kingdom, despite the fact that there's not very many of them. These four new cubs are not only adorable and rare ligers, but they have a special quality that makes them even more special than the rest of their kind. Meet the new cubs and find out what makes them so unique in the story below.

No, they're not some kind of otherworldly fairytale creature: This is the liger, and it's very, very real.

Four new ligers have just joined the world, and it's all thanks to this beautiful pair -- a white lion and a white tiger.

The new cubs are Yeti, Odlin, Sampson, and Apolo.

Their birth makes them the rarest big cats on the planet. At six weeks old, they already weigh about 15 pounds -- and they gain about a pound per day.

It's hard to believe that these little cubs could actually grow to cats this size.

There are only around 300 white lions and 1,200 white tigers left in the world, so the cubs’ father, Ivory and mother, Saraswati, are extremely rare as well -- not to mention massive.

There are about 1,000 ligers in the world, but there's one thing about these cups that set them apart.

None of the other ligers are white like these little guys.

According to the keepers, each of the ligers has its own distinct personality.

Apollo is the smallest, who his owners say behaves more like a house kitten, demanding to be cuddled all the time.

Yeti, another cub, always wants to be the center of attention.

Something tells us that none of these cubs will have to fight for attention -- they're all just so darn cute.

The cubs' extended family is pretty impressive as well.

The cubs’ uncle, Hercules, is officially the world’s largest cat at 922 lbs and 131 inches long and is featured in the Guinness Book of World Records. The keepers at the zoo say that it's possible for one of the cubs to reach this size, too.

Now, the zookeepers and the cubs are just enjoying all the attention. "We’ve had everyone from Congress to people of all walks of life come," one keeper said in an interview. "They are honestly such an incredibly unique sight."