It has immense cultural value.” World’s oldest domesticated dog breed has lived with humans for 1,000 years, new study shows — but their population is plummeting ...

Gavin Ehringer probes how human intervention harms dogs, cats, cows and horses.

The study notes that humans began to breed dogs about 160 years ago to try to pass on characteristics like the color and texture of their coats. But that's all just cosmetics.