My sister got my young son Miles pajamas for Christmas that had a Narwhal on it. I was intrigued by the animal so I decided to do some more research and discovered that the Narwhal was not only unique, but the unicorn of the Narwhal was actually a protruding canine tooth! I am not an expert in sea mammal teeth, only human teeth. Nevertheless, this adorable creature still holds many questions for experts in the field as to why this exists. For more information on the Narwhal we encourage you to google Narwhal to learn more.