There's an endless amount of scientific data proving that dogs can develop strong bonds with their owners. People aren't kidding when they say they love their dog or their dog loves them, but were rather ignorant about the nature of the relationships that form between dogs. In an effort to understand the matter further, I spoke with doctors Mark Beckhoff, a researcher and former professor of animal behavior. The doctors'response to the question of whether or not dogs can fall in love like humans do was a straight "Of course!" He went on to say that if love is defined as a long-term commitment, meaning dogs seek one another out when they're apart, they're happy when they're reunited, they protect one another, they feed one another, they raise their children together. Then, of course, dogs love each other. Now our furry friends don't really experience romantic love, like in the movies, but they can form deep and lasting bonds with their fellow dogs as well as humans. In fact, evidence shows almost dogs stay with one partner their whole lives. In actuality, love between dogs can be even more intimate than human relationships. When they interact, they aren't afraid to smell each other and will express themselves clearly and honestly. Once again, it seems we have a lot to learn from dogs.
Questions 19 to 21 are based on the passage you have just heard.
Question 19. What does the passage say we don't know much about?
Question 20. What does Dr. Mark Beckhoff say about dogs?
Question 21. What does the speaker say about most dogs?