Which breed was the first dog clone?

Snuppy (April 24, 2005–May 2015) was an Afghan hound, the first dog clone. The puppy was created using a cell from an ear from an adult Afghan hound and involved 123 surrogate mothers, of which only two produced pups (Snuppy being the sole survivor). The Department of Theriogenology and Biotechnology at Seoul National University, which cloned Snuppy, was led by Woo Suk Hwang.

Snuppy has since been used in the first known successful breeding between cloned canines after his sperm was used to artificially inseminate two cloned females, which resulted in the birth of 10 puppies in 2008. In 2017, 4 clones of Snuppy were made by Sooam, and were the first clones made of a cloned dog, to investigate potential health effects of cloning.