Unicorns are a tier 4 animal that can be found on the candy island. In order to get to the candy island, you need 1,750,000 coins to buy its key. Then you must go to the candy island dock and travel there. Much like any tier 4 animal, they can only be obtained by being captured by a super net. However, their food, cotton candy, is harder to obtain and takes over 12 hours to grow.