The agency reported that the dog, which kept its old heart and the new one, survived for five months.

There, after dogs survived for a year with a new heart, the two researchers were ready to try it on human patients.

"A dog can survive in the wilds by himself," he said.

Amazingly, the dog survived, but he needed several operations and more than £1,000-worth of treatment.

The two dogs survived, and were taken in by people who had seen the accident, a witness said.

Sometimes older dogs like him did not survive the trauma of the surgery, she explained.

During one of the events, a dog was wounded by the explosion and did not survive.

It is across a busy highway that no dog has survived the crossing.

The dogs survived in rural areas, where the people believed that they held a mystical value.

The environment was not one in which dogs could survive, so somehow they took to the heights.