In a quiet neighborhood in Miryang, Gyeongnam Province, a small dog named Sunsimi was living a life few people noticed.

He could not use his back legs.

Instead of walking, he pulled himself forward across flattened cardboard sheets placed beneath him. The rough ground would have injured him otherwise. His two hind legs remained stiff and extended, weakened from long-term paralysis.

Sunsimi had once belonged to an elderly woman who lived alone. She had been his entire world. But when she was hospitalized for long-term treatment and never returned home, Sunsimi was left behind.

Still chained.

Still waiting.

The heavy iron chain around his neck had worn into his skin over time. Observers believed he had likely been hit by a vehicle, causing severe injury to his spine and pelvis. Without timely medical care, the damage progressed. His back legs gradually lost muscle and became deformed.

And yet, despite all of it, he continued to greet anyone who came near with a gentle wag of his tail.

The Woman Who Refused to Give Up on Him

Yoon Hee-soon first encountered Sunsimi while volunteering in the area, helping elderly residents.

What she saw stayed with her.

Many suggested that Sunsimi’s condition was beyond recovery. Some even advised that euthanasia might be the most practical choice.

But she did not see a hopeless case.

She saw a life still reaching forward.

Instead of walking away, she brought him into her care. She made a quiet promise — that as long as he had the will to live, she would try.

And Sunsimi did have that will.

He ate well.
He responded warmly to her presence.
He wagged his tail whenever she approached.

Even without the use of his legs, he showed unmistakable joy.

Video: Paralyzed and Left Behind, He Fought for Life With a Wagging Tail

A Diagnosis More Serious Than Anyone Expected

When Sunsimi was brought to a specialized veterinary hospital in Seoul, the full extent of his condition became clear.

He had a fractured pelvis and spinal trauma — explaining his inability to walk.

But there was something even more urgent.

Severe heartworm infection.

The parasites had accumulated densely in his pulmonary arteries and heart. His heart was enlarged. Circulation was compromised. The condition was life-threatening.

The medical team faced a complex challenge.

Surgery to repair his pelvis would require anesthesia — but with heartworm at this stage, anesthesia itself could trigger cardiac arrest.

They had to choose carefully.

Choosing the Harder Path to Survival

The doctors decided to prioritize treating the heartworm first.

Medication was administered to stabilize his condition. His body needed to be strong enough to endure what lay ahead. Only after improving his heart function could they consider surgical intervention for his pelvis.

It was a delicate balance.

Every treatment carried risk.
Every delay carried uncertainty.

But Sunsimi remained steady through it all.

He continued to eat.
He continued to respond.
He continued to wag.

Two weeks into medical therapy, he returned to the hospital — this time for the high-risk procedure to remove the heartworms.

Yoon Hee-soon and her sister stayed by his side, offering quiet encouragement. Their presence was calm, unwavering.

Sunsimi walked — or rather, pulled himself — toward the operating room with the same courage he had shown since the beginning.

A Life Worth Fighting For

This story does not end with dramatic celebration.

It ends with hope.

Hope that surgery will give his heart the strength it needs.
Hope that one day, his pelvis can be repaired.
Hope that he might stand again on his own four paws.

But even before any final outcome, Sunsimi’s journey has already revealed something powerful.

He was chained and forgotten.
He was injured and untreated.
He was told there was little chance.

Yet one person chose to see value where others saw limitation.

And because of that choice, Sunsimi now has something he did not have before:

A future.

His story reminds us that love is not measured by convenience. It is measured by commitment — especially when the path is difficult.

Sometimes, the greatest miracles begin with a simple refusal to give up on a life that still wants to live.