Gene mutation that helps make 'toy' dog breeds so small existed in wolves 54,000 years ago

Gene mutation that helps make 'toy' dog breeds so small existed in wolves 54,000 years ago
It existed long before humans started breeding the cute canines. One of the main genetic mutations responsible for small size in certain dog breeds, …

* View the article originally published here. ** More curations: Al Cannistra at San Antonio ONE here.