SAN FRANCISCO – The first cloned-to-order pet sold in the United States is named Little Nicky, a 9-week-old kitten delivered to a Texas woman saddened by the loss of a cat she had had for 17 years.

The kitten cost its owner $50,000 and was created from DNA from her beloved cat, named Nicky, who died last year.

“He is identical. His personality is the same,” the owner, Julie, said. Although she agreed to be photographed with her cat, she asked that her last name and hometown not be disclosed because she said she fears being targeted by groups opposed to cloning.

The kitten’s creation and sale, however, has reignited fierce ethical and scientific debate over cloning technology, which is rapidly advancing.

The company that created Little Nicky, Sausalito-based Genetic Savings and Clone, said it hopes by May to have produced the world’s first cloned dog – a much more lucrative market than cats.

Commercial interests already are cloning prized cattle for about $20,000 each, and scientists have cloned mice, rabbits, goats, pigs, horses – and even the endangered banteng, a wild bull that is found mostly in Indonesia. Several research teams around the world, meanwhile, are racing to create the first cloned monkey.

Aside from human cloning, which has been achieved only at the microscopic embryo stage, no cloning project has fueled more debate than the marketing plans of Genetic Savings and Clone.

“It’s morally problematic and a little reprehensible,” said David Magnus, co-director of the Center for Biomedical Ethics at Stanford University. “For $50,000, she could have provided homes for a lot of strays.”

Animals rights activists complain that new feline production systems aren’t needed because thousands of stray cats are euthanized each year for want of homes.