Border Collie, Poodle, German Shepherd, Golden Retriever, or Labrador Retriever: Which breed learns fastest? Which one surprises trainers the most?

Border Collie, Poodle, German Shepherd, Golden Retriever, and Labrador Retriever are often praised for their intelligence—but ...
The New York Times

But how much does breed shape a dog’s health and behavior?

Humans have a long history of reshaping their canine companions, which evolved from ancient wolves. At least 10,000 years ago, Arctic peoples were using selective breeding to create sled dogs, ...