Those lucky workers over at the Scandanavian Wildlife Park in Denmark get to hand raise this unbelievably cutebaby polar bear cub. His name is Siku, which means 'ice' in an Inuit dialect, and he's being hand raised because his mother was unable to produce enough milk to feed him.

Little Siku rose to internet fame when this over-the-top adorable video emerged. Be Warned, you may pass out from cute overload:

Here's another caterpillar that undergoes an intense transformation. This is the Sycamore Moth (Acronicta aceris) and its baby form is a beautiful hairy yellow caterpillar highlighted with tufts of fiery red. Then there are those distinctive white spots running along its back -- quite a sight, wouldn't you agree?

Unfortunately, yet again, these guys have to lose their beauty as they age. Going from sunny and bright, to gray and white. The caterpillars feed on the Common Horse-chestnut, Large-leaved Lime, Mulberry and Pedunculate Oak.