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Watch History by the Numbers Season 1 Episode 18 Online

  • 2/10
  • COUNTRIES: Canada
  • Subtitles: English

Humans have evolved alongside millions of species, but we've invited only 2 of them out of the wild into our homes. Discover the furball history of Cats & Dogs, from caveman to Instagram, hunting companion to pampered pooch - with 7.4 million likes and 6.8 billion snapshots of our cuddly companions.