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Why We Love Cats and Dogs

Season 27 Episode 8 | 53m 10s

Americans own 73 million dogs and 90 million cats. They become best friends, soul mates, family members -- even surrogate children. Relationships with cats and dogs are some of the longest and most intimate of our lives. Why are we so attached? Animal behavior experts, evolutionary biologists, veterinarians, and pet owners share insights and observations about these animals and their impact on us.

Aired: 02/14/09

Rating: TV-PG

Video has closed captioning.

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