Puppy born with unbelievable facial feature

An abandoned 10-week-old puppy has become an internet sensation for his unique extra tail, which happens to be on his head.

Mac the Pitbull and owner Rochelle Steffen, of Mac’s Mission, a Missouri-based non-profit group came across the puppy with the extra tail who also had a foot injury, and another older dog earlier in November.

“We are thankful this baby and his buddy are safe from the freezing cold,” Mac the Pitbull wrote on Facebook.

“We definitely specialise in special.”

In a later post on the Mac the Pitbull Facebook page, ‘Mac’ said although they were unsure what breed the special puppy was, the other dog found with him, may have been his father and looked like a dachshund-terrier mix.

A few days after he was rescued, the puppy dubbed the “Little Magical Furry Unicorn”, was named Narwhal, after the whale with a single tusk, which is sometimes referred to as the ‘Unicorn of the Sea’.

Although the extra tail made Narwhal unique, there were concerns about whether the tail would be harmful to him, also, many people wanted to know whether the additional tail would be able to wag.

Mac the Pitbull reiterated on Facebook the tail would only be removed if it was medically necessary.

Narwhal went to the vet on Wednesday and it was determined the tail was no harm to him.

“The extra tail is not connected to anything and has no real use other than making him the COOLEST PUPPY EVER!” Mac reported.

“Dr Heuring [the vet] said there is no real reason at this time for the unicorn tail to be removed.”

The tail doesn’t seem to bother Narwhal, nor does it slow him down, and it was confirmed, Narwhal does not have the ability to wag his tail on his head.

Narwhal has gained a lot of attention on social media, with many people showing genuine interest in adopting him, however Mac’s Mission is not currently taking adoption applications.

“We are not accepting applications for him right now until we are very certain his unicorn horn is not going to have a growth spurt and become an issue,” the Facebook page said.

Narwhal received a respectable 14 out of 10 score from the Twitter account, We Rate Dogs, which then got the attention of Scrubs actor Zach Braff who insisted he needed Narwhal.

“Always read the instructions before assembling your puppy,” @dog_rates tweeted to their 8.5 million followers.

Ocean Conservancy on Twitter said all the “sea unicorns” [Narwhal whales] were cheering on the pup.

“ALRIGHT we just spoke with all the other narwhals and they would like to send ALL THEIR LOVE to this special specimen because he is PERFECT in EVERY WAY,” @OurOcean tweeted.

• Adorable dog with 'human face' who looks like he's smiling baffles the internet.

• Abused stray who was shot 17 times becomes therapy dog.

While Narwhal may not understand how he is a viral sensation, him being the poster child for “special is awesome” is helping out the other dogs in the rescue.

“Right now he is pretty much the most unique amazing example of what we do here and we are so thankful to have the chance to be part of his journey,” Mac the Pitbull wrote.

Mac’s Mission started in Rochelle Steffen’s kitchen, making shirts to fund Mac the pitbull’s surgery in 2012, after rescuing him in 2011.

“We specialise in ‘pitbulls’ but we are not breed specific. We help "all breeds of special needs", the homeless animals that have zero chance because shelters and rescues don't have the resources,” Mac’s Rescue says on their Facebook.

“Mac's Mission is not your ordinary rescue.”

Do you have a story tip? Email: newsroomau@yahoonews.com.

You can also follow us on Facebook and Twitter, download the Yahoo News app from the App Store or Google Play and stay up to date with the latest news with Yahoo’s daily newsletter. Sign up here.