This egg was only available in Egg Cave's Cash Shop Park for February 2012.
Yuki eggs look like they're cracked but they have a solid, outer shell. The cracked look comes from the egg's shell being slightly see-through.
In an independent survey conducted by the Science and Research Center in Ark City in February 2012, the Yuki was named "The Cutest and Most Lovable Creature" of all discovered creatures. Whilst Yuki certainly love cuddling, they are most known for their infectious, high-pitched laugh that causes joy and smiles anywhere.