|The mutation may have popped up in a wolf, although no living wolf|
population has the gene today, or an ancient dog. People recognized
an advantage and made more.
Oh yes. And one more. The Rottweiler. Which means there's a whole lot more to learn about what makes little dogs little, and for that matter, big dogs big.
|I think she looks like other miniaturized mastiff-type dogs (think Pug)|
in everything but weight.