This picture taken on June 29, 2016 shows South Korean researchers collecting donor eggs from pigs' ovaries at the Sooam Biotech Research Foundation, a world leader in pet cloning, in Seoul. Sooam Biotech clones many animals, including cattle and pigs for medical research and breed preservation, but is best known for its commercial dog service. Since 2006, the facility has cloned nearly 800 dogs, commissioned by owners or state agencies seeking to replicate their best sniffer and rescue dogs. / AFP PHOTO / JUNG YEON-JE / TO GO WITH Science-genetics-cloning-pets-SKorea,FEATURE by Jung Ha-WonJUNG YEON-JE/AFP/Getty Images

This picture taken on June 29, 2016 shows a South Korean researcher walking past cloned dogs at a care room of the Sooam Biotech Research Foundation, a world leader in pet cloning, in Seoul. Sooam Biotech clones many animals, including cattle and pigs for medical research and breed preservation, but is best known for its commercial dog service. Since 2006, the facility has cloned nearly 800 dogs, commissioned by owners or state agencies seeking to replicate their best sniffer and rescue dogs. / AFP PHOTO / JUNG YEON-JE / TO GO WITH Science-genetics-cloning-pets-SKorea,FEATURE by Jung Ha-WonJUNG YEON-JE/AFP/Getty Images

This picture taken on June 29, 2016 shows cloned dogs frolicking around the fenced lawn at the Sooam Biotech Research Foundation, a world leader in pet cloning, in Seoul. Sooam Biotech clones many animals, including cattle and pigs for medical research and breed preservation, but is best known for its commercial dog service. Since 2006, the facility has cloned nearly 800 dogs, commissioned by owners or state agencies seeking to replicate their best sniffer and rescue dogs. / AFP PHOTO / JUNG YEON-JE / TO GO WITH Science-genetics-cloning-pets-SKorea,FEATURE by Jung Ha-WonJUNG YEON-JE/AFP/Getty Images

This picture taken on June 29, 2016 shows pigs' ovaries to collect donor eggs at the Sooam Biotech Research Foundation, a world leader in pet cloning, in Seoul. Sooam Biotech clones many animals, including cattle and pigs for medical research and breed preservation, but is best known for its commercial dog service. Since 2006, the facility has cloned nearly 800 dogs, commissioned by owners or state agencies seeking to replicate their best sniffer and rescue dogs. / AFP PHOTO / JUNG YEON-JE / TO GO WITH Science-genetics-cloning-pets-SKorea,FEATURE by Jung Ha-WonJUNG YEON-JE/AFP/Getty Images

This picture taken on June 29, 2016 shows South Korean researchers playing with cloned dogs in the fenced lawn at the Sooam Biotech Research Foundation, a world leader in pet cloning, in Seoul. Sooam Biotech clones many animals, including cattle and pigs for medical research and breed preservation, but is best known for its commercial dog service. Since 2006, the facility has cloned nearly 800 dogs, commissioned by owners or state agencies seeking to replicate their best sniffer and rescue dogs. / AFP PHOTO / JUNG YEON-JE / TO GO WITH Science-genetics-cloning-pets-SKorea,FEATURE by Jung Ha-WonJUNG YEON-JE/AFP/Getty Images

This picture taken on June 29, 2016 shows South Korean researchers checking donor eggs at the Sooam Biotech Research Foundation, a world leader in pet cloning, in Seoul. Sooam Biotech clones many animals, including cattle and pigs for medical research and breed preservation, but is best known for its commercial dog service. Since 2006, the facility has cloned nearly 800 dogs, commissioned by owners or state agencies seeking to replicate their best sniffer and rescue dogs. / AFP PHOTO / JUNG YEON-JE / TO GO WITH Science-genetics-cloning-pets-SKorea,FEATURE by Jung Ha-WonJUNG YEON-JE/AFP/Getty Images

This picture taken on June 29, 2016 shows a screen displaying a process of removing a nucleus from a donor egg at the Sooam Biotech Research Foundation, a world leader in pet cloning, in Seoul. Sooam Biotech clones many animals, including cattle and pigs for medical research and breed preservation, but is best known for its commercial dog service. Since 2006, the facility has cloned nearly 800 dogs, commissioned by owners or state agencies seeking to replicate their best sniffer and rescue dogs. / AFP PHOTO / JUNG YEON-JE / TO GO WITH Science-genetics-cloning-pets-SKorea,FEATURE by Jung Ha-WonJUNG YEON-JE/AFP/Getty Images

This picture taken on June 29, 2016 shows cloned dogs frolicking around the fenced lawn at the Sooam Biotech Research Foundation, a world leader in pet cloning, in Seoul. Sooam Biotech clones many animals, including cattle and pigs for medical research and breed preservation, but is best known for its commercial dog service. Since 2006, the facility has cloned nearly 800 dogs, commissioned by owners or state agencies seeking to replicate their best sniffer and rescue dogs. / AFP PHOTO / JUNG YEON-JE / TO GO WITH Science-genetics-cloning-pets-SKorea,FEATURE by Jung Ha-WonJUNG YEON-JE/AFP/Getty Images