Since they were first domesticated between 15,000 and 30,000 years ago, dogs have been man's best friend. Pets provide us with so much more than entertainment or companionship. In fact, there's a whole field of scientific inquiry called anthrozoology, which purports to investigate the relationships between humans and non-human animals.

Is there any truth to the idea that cat people and dog people are fundamentally different? Can having a dog improve your chances of getting a date? And do people really look like their pets? What does the science say?

To learn more about our relationships with our four-legged friends from an evidence-based perspective, I reached out to Dr. Hal Herzog, anthrozoologist and author of "Some We Love, Some We Hate, Some We Eat: Why It's So Hard To Think Straight About Animals."

CLICK HERE FOR FULL TRANSCRIPT

See all Talk Nerdy to Me posts.
Like Cara Santa Maria on Facebook.
Follow Cara Santa Maria on Twitter.


For fun, check out this slideshow of celebrities who look like their pets!

Loading Slideshow...
  • Marc Jacobs

    (FameFlynet)

  • Gwen Stefani

    (FameFlynet)

  • Olivia Wilde

    (FameFlynet)

  • Jon Stewart

    (FameFlynet)

  • Khloe Kardashian

    (FameFlynet)

  • Jessica Biel

    (FameFlynet)

  • Jesse Tyler Ferguson

    (FameFlynet)

  • Amanda Seyfried

    (FameFlynet)

  • Britney Spears

    (FameFlynet)

  • Kathy Bates

    (FameFlynet)

  • Cloris Leachman

    (Getty)

  • Paris Hilton

    (Getty)

  • Fran Drescher

    (Getty)

  • Jane Lynch

    (Getty)

  • Elizabeth Taylor

    (Getty)

  • Ashley Tisdale

    (Getty)

  • Tori Spelling

    (Getty)

  • Perez Hilton

    (Getty)

  • Mickey Rourke

    (Getty)

  • Susan Sarandon

    (Getty)

  • Bethenny Frankel

    (Getty)

  • Ramona Singer

    (Getty)

  • Katherine Heigl

    (Getty)

  • Reese Witherspoon

    (Getty)

  • Ashley Tisdale

    (Getty)

  • Ryan Gosling

    (Getty)