Based on a study of 164 breeds conducted by Dr. Kenth Svartberg of Stockholm University from 1997 to 2000, the following breeds were found to be the boldest:
1. Labrador retriever
2. Flat-coated retriever
3. Belgian Malinois
4. Boxer
5. Rottweiler
6. German shepherd dog
7. Giant schnauzer
8. Border collie
9. American Staffordshire terrier
10. Parson Russell terrier (Jack Russel terrier)
*Boldest dogs combine measures of fearlessness, curiosity, sociability, and interest in chasing prey.