JOHN: BEFORE WE GO TONIGHT, WE INTRODUCE YOU TO A VERY SPECIAL AND VERY GOOD DOG IN UKRAINE.

AT THIS REHABILITATION FACILITY IN KYIV, SOME OF UKRAINE'S WOUNDED WARRIORS WORK HARD TO LEARN HOW TO USE THEIR NEW LIMBS.

IF THEY NEED INSPIRATION TO PERSEVERE, THEY CAN LOOK TO A DOG NAMED LAVR.

>> YOU FEEL A SENSE OF EMOTIONAL RELIEF ESPECIALLY WITH A DOG , HERE ON PROSTHETICS, JUST LIKE US.

IT'S TRULY WONDERFUL.

JOHN: LAVR WAS FOUND NEAR ODESA'S RAILWAY STATION AFTER A TRAIN HAD SEVERED HIS FRONT PAWS.

NOW, HE USES PROSTHETIC PAWS.

THEY'RE MADE OF TITANIUM JUST LIKE AMPUTEES' PROSTHETICS.

AND, LIKE MANY OF THE PATIENTS, THEY'RE INTEGRATED WITH HIS BONES THROUGH AN ADVANCED RECONSTRUCTIVE SURGERY PROCEDURE CALLED OSSEOINTEGRATION.

LAVR'S OWNER IS THE FOUNDER OF THE REHAB CENTER.

>> IT'S REMARKABLE THAT OUR WORK INSPIRED THE VETERINARIAN, A TRAUMA SURGEON, TO PERFORM OSSEOINTEGRATION ON THIS DOG.

AND IS SUCCEEDED.

THEY DESIGNED AND PRODUCED TITANIUM IMPLANTS.

JOHN: HE'S A FIXTURE AT THE CENTER, PLAYING WITH PATIENTS AND JOINING IN PHYSIOTHERAPY SESSIONS.

LAVR BEHAVES AS IF HIS PROSTHETICS WERE HIS NATURAL PAWS.

>> THE MOST IMPORTANT THING IS THAT THE DOG HAS ACCEPTED THE PROSTHETICS.

HE DOESN'T CHEW THEM - HE LICKS THEM, TREATING THEM AS HIS OWN PAWS.

IF THEY FELT ARTIFICIAL TO HIM, HE WOULD HAVE CHEWED THEM OFF - HE'S A DOG, AFTER ALL.

JOHN: AS LAVR ROAMS THE CENTER, HE'S MAKING A DIFFERENCE IN THE LIVES OF SO MANY OF THESE SOLDIERS WHO LOST LIMBS ON THE BATTLEFIELD.

>> THE DOG CAN WALK NOW, AND I WANT TO AS WELL.

SOON, I'LL BE ABLE TO WALK TOO.

>> THE DOG WANTS TO LIVE - JUST LIKE WE DO.

AND I'LL WALK TOO - NOT ON FOUR LEGS, BUT ON TWO.