Snow Eggs have a white body with a snowflake pattern on it, a blushing on its cheeks and nose area, and big round blue eyes with swirls and sparkles in them. Here is what the game says about them:
"Thought to be extinct, these rare and delicate eggs were recently discovered hibernating in the frosty tundra. Snow Eggs hatch quickly with careful tending, but they're still very susceptible to the elements -- Caution! They lose health quickly!"
Like Space Eggs, Snow Eggs CAN'T be bought with game coins. The price to unlock these eggs is $2.99 - after unlocking they become available for free adoption forever. They hatch in two days, and their difficulty is tree and a half out of four eggs - this means they're the most difficult eggs available, along with Fire Eggs.
Snow Egg Creatures