It wasn’t long ago that one man, Dmitriy Timchenko, witnessed an incredible act of selfless solidarity between two dogs.

Timchenko and a friend were visiting a store in the town of Novorossiysk, Russia, when they noticed a pit bull tied up out front. The dog had been left there by his owner who was inside, shopping, however, the other dog that was passing by did not know that.

The passing dog was a stray, and perhaps that is why he seemed concerned that the tied-up dog was likely an abandoned dog like him.

“I’ve seen this stray dog around town many times,” Timchenko said to The Dodo. “He always uses the crosswalk to cross the street. He’s a very smart dog.”

And not only is he smart, apparently, but he’s also really thoughtful, too.

The pit bull’s owner went inside the store, leaving the dog outside tied to the leash to keep him safe while he went shopping. However, the stray thought the pit bull had been abandoned.

The stray proceeded to help the pit bull by untying him from the fence. According to Timchenko and his friend, it was an adorable moment, and they posted on Instagram a video of how it all unfolded.

The stray dog continued on his mission to free his newfound friend, as he pulled and tugged. Finally, he was able to loosen the knot with a proud look on his face. Then, the confused pit bull was urged by the stray to start following him.

At this point, Timchenko and his friend intervened, fearing that the pit bull could get lost. They went into the store and found the owner, helping her retrieve her dog.

While it was all just a big misunderstanding, witnessing the adorable exchange makes you appreciate animals and their pure hearts.