(KDKA) – PITTSBURGH — More than 20 years ago, in July 1996, Dolly the sheep was born at a research facility in Scotland. While scientists worked to clone animals for decades, Dolly was the first mammal cloned from a single, adult cell.

The news was so big Dolly was on the cover of Time magazine. Yet six-and-a-half years later, skeptics scoffed when Dolly had to be put down after she developed a lung infection. Many wondered if her early death was a result of being a cloned animal and added to the assumption that cloning animals was nothing more than a passing fancy.

However, the work to clone continued. Much of the focus continued on livestock and show animals. Now, the process has advanced to the point where veterinarians and scientists can clone your pets.

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