Why We Love Cats and Dogs

Season 27 Episode 8 | 53m 10s Video has closed captioning.

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

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Major support for NATURE is provided by The Arnhold Family in memory of Henry and Clarisse Arnhold, Sue and Edgar Wachenheim III, The Fairweather Foundation, the Kate W. Cassidy Foundation, ...

Major support for NATURE is provided by The Arnhold Family in memory of Henry and Clarisse Arnhold, Sue and Edgar Wachenheim III, The Fairweather Foundation, the Kate W. Cassidy Foundation, Kathy Chiao and Ken Hao, the Lillian Goldman Charitable Trust, Charles Rosenblum, the Filomen M. D’Agostino Foundation, Rosalind P. Walter, Sandra Atlas Bass, Doris R. and Robert J. Thomas, The Hite Foundation, Gary and Christy Roeber, The Sun Hill Family Foundation in memory of Susan and Edwin Malloy, The Arlene and Milton D. Berkman Philanthropic Fund, the Bradley L. Goldberg Family Foundation, the Anderson Family Fund, The M. & H. Sommer Foundation, Ron Hull, by the Corporation for Public Broadcasting, by PBS, and by Viewers Like You.