Until you realize Daniel Kingsley, creator of Phineas and Ferb, predicted that the platypus was teal under ultraviolet light 13 years before it was discovered.
Or maybe they created this creature for reference while making the movie and then released it into the wild when they were done. Or maybe it's just coincidence. Who can say. These all seem equally plausible to me.
Or maybe an expert in the field decided to make something bizarre yet plausible, only to be shown that nature has been playing that same game for a lot longer. The fact it's living now is a neat coincidence.