The domestic dog (Canis lupus familiaris or Canis familiaris) is a domesticated canid which has been selectively bred for millennia for various behaviors, sensory capabilities, and physical attributes. 

Although initially thought to have originated as a manmade variant of an extant canid species (variously supposed as being the dhole, golden jackal, or gray wolf), extensive genetic studies undertaken during the 2010s indicate that dogs diverged from an extinct wolf-like canid in Eurasia 40,000 years ago. Being the oldest domesticated animal, their long association with people has allowed dogs to be uniquely attuned to human behavior, as well as thrive on a starch-rich diet which would be inadequate for other canid species. 

Dogs perform many roles for people, such as hunting, herding, pulling loads, protection, assisting police and military, companionship, and, more recently, aiding handicapped individuals. This impact on human society has given them the nickname "man's best friend" in the Western world. In some cultures, however, dogs are a source of meat.

Answer the following questions:
1. How long has the domestic dog been bred?
2. Do dogs perform a lot of roles for people?
3. What's an example of one?
4. How about another example?
5. Do dogs get along with law enforcement?
6. What about with the military?
7. Are they better friends to women or men, according to their nickname?
8. Can you eat a dog, according to some cultures?
9. When were extensive genetic studies conducted?
10. How long ago did the dog diverge from a wolf-like ancestor?
11. Where?
12. Is the dog the oldest domesticated animal?
13. Would they be able to thrive by eating stuff like pasta, potatoes, and other starchy foods?
14. Would such foods be good for other canid species?
15. What does a dog do to handicapped invididuals?
16. How many attributes have dogs been bred for?
17. Are dogs actually related to the golden jackal or gray wolf?
18. Can a dog pull a load like a sleigh?
19. Have dogs had any impact on human society?
20. How many roles do dogs perform for people?

Numbered answers:
1. for millennia
2. yes
3. hunting
4. herding
5. yes
6. yes
7. men
8. yes
9. during the 2010s
10. 40,000 years ago
11. Eurasia
12. yes
13. yes
14. no
15. aid them
16. various
17. no
18. yes
19. yes
20. Dogs perform many roles for people, such as hunting, herding, pulling loads, protection, assisting police and military, companionship, and, more recently, aiding handicapped individuals