Dog domestication happened just once, ancient DNA study suggests
Like pups worrying over a bone, debate over when — and how many times — dogs were tamed continues
![dog skull](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2017/07/071817_TI_dog-domestication_main.jpg?fit=860%2C460&ssl=1)
HEAR HEAR DNA extracted from an inner ear bone of this dog skull is helping researchers decipher dogs’ origin story. The skull is about 4,700 years old and was found at Cherry Tree Cave in Germany.
Amelie Scheu