Japanese scientists have produced the clone of a cloned bull, the first time a large cloned animal has been cloned, researchers said Monday.
The calf born Sunday night is part of a project to study the life expectancy and aging of cloned animals, scientists at the Kagoshima Prefectural Cattle Breeding Development Institute said.
The three generations of genetically identical bulls -- the original animal and the two clones -- are being studied at the institute in southern Japan.
"There is speculation that cloned animals may not be as healthy or live as long as normal animals," said Norio Tabara, one of the research scientists involved in the project.
Researchers in the United States have successfully produced clones of cloned mice.
The primary purpose of the institute's project is to produce tastier beef.