If you haven't heard about 'Unicorn' puppy, well, take a minute or two right here. Because it's worth it.
Mac's Mission in Missouri is used to taking in different dogs. The latest puppy brought to the mission has been a viral – and adorable – sensation.
Ten-week-old Narwhal has taken social media by storm. The puppy, who is a Dachshund-mix, has a small tail growing out of its head. He was found "in rural Missouri" with a larger dog on Friday and brought to Mac's Mission on Saturday.
Dr. Brian Heuring, who has been a veterinarian for 16 years, told USA TODAY he's never seen a puppy like Narwhal.
He said the tail is likely a congenital defect. Those usually manifest in dogs as cleft palates or extra toes and causes can range from environmental factors to toxins the puppy's mother may have been exposed to, he added.
Check out more of the 'Unicorn' puppy below, and read more HERE.