Happy National Best Friends Day: Best Friends Come In All Shapes And Sizes [VIDEOS]

PRETORIA, SOUTH AFRICA - MAY 04: ***EXCLUSIVE*** Leopard 'Salati' snuggles up beside golden retriever 'Tommy' in the back of a 4x4 at the Glen Afric Country Lodge on May 04, 2010 in Pretoria, South Africa. Salati the leopard turns the assumption that dogs love to chase cats on its head by running playfully after Tommy the golden retriever. Animal wrangler Richard Brooker, 23, hand-reared 10-month-old Salati and gives her and family pet dog Tommy their daily exercise together. He takes them out into his family's 750 hectare estate and lets them run amok, saying "Wherever you see one the other is right behind". Rescued as an orphaned cub, Salati was donated by a local vet to the family-run country retreat, which helps to rehabilitate injured and needy animals. The Brookers' hard work and breeding programmes with elephants, lions, and giraffes has helped boost wildlife numbers in the area.

(Picture Credit: Matthew Tabaccos/Barcroft Media/Getty Images)

National Best Friends Day is coming up on June 8th! Who knew, right?

Well, whether you knew it or not, it’s a special day to celebrate your best friend. That’s your dog, of course!

Our relationships with our dogs prove that best friends don’t even have to be the same species. Our pooches are awesome at being good friends, and other members of the animal kingdom know that, too!

Here are a few stories of canines who show us friends can come in any shape, color, size, or species in honor of National Best Friends Day!

The Orangutan And The Hound Dog

Suryia the Orangutan lives in Myrtle Beach, South Carolina at T.I.G.E.R.S., The Institute of Greatly Endangered and Rare Species. He’s the only Orangutan at the park who enjoys swimming and is known for being open to new ideas.

According to the park workers, a hound dog approached Suryia one day while he was on a walk with a handler. Suryia and the pup were instantly drawn to each other, and rolled around hugging and playing, like long lost friends.

Eventually Surya had to go back to his home, and the handlers figured the dog would go back to his pack. But the dog followed and made his way back inside the gates and straight to Surya.

The stray was taken in by T.I.G.E.R.S. and named Roscoe, and the pair have been inseparable ever since. Surya shares everything with Roscoe. After being on the outside and having to fight for every bite, it seems like Roscoe definitely appreciates having Surya as a friend.

The Leopard And The Jack Russell Terrier

The Akwaaba Lodge and Predator Park is home to many domestic, exotic, South African cats. It is also home to a Jaguar named Jag and his best friend Bullet, a little Jack Russell Terrier.

When Jag first arrived to Akwaaba, he was in need of comforting. The workers introduced him to Bullet, and the two got along exceptionally well.

After a while, Jag was given his own enclosure, but neither animal accepted it. They pined for each other day and night. The park relented and once again the two were reunited.

They currently live together in the same enclosure.

The Chihuahua & The Chicken

The next story is one that has been told over and over, but it should be told again. It’s possibly one of the sweetest and cutest friendships on the entire planet: Roo the Chihuahua and Penny the Chicken.

Penny is a Silkie Chicken who came from a testing facility. At 9-weeks-old she had served her “purpose” and was about to be discarded when a nice lady stepped up and adopted her. Penny’s mom, Alicia Williams, noticed that Penny hated being home alone all day, so she started bringing her to work at the Duluth Animal Hospital.

Roo is a Chihuahua who was born with out his two front legs. He was found freezing in a ditch and taken to the Duluth Animal Hospital. It was there that Penny and Roo first met and formed an immediate bond.

A nice person donated Roo his first set of wheels, and now the two are able to go on walks together.

Ms. Williams brings Roo and Penny to work with her every day where people love to see the celebrity pair.

If you are like me and want to see what Roo and Penny are up to, like them on Facebook.

These are just a few inspiring stories of canines that were able to form friendships from unlikely sources. When all hope seems lost, who knows what friendships you’ll find if you have an open mind and heart?

What other unusual animal friendships should we celebrate on National Best Friends Day? Does your dog have any unlikely pals? Let us know in the comments below!