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Do larger animals take longer to pee? - David L. Hu

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4,081 Questions Answered

TEDEd Animation

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A cat’s bladder can only store a golf ball’s worth of urine. For humans, it’s a coffee mug and for elephants, a kitchen trash can. An elephant’s bladder is 400 times the size of a cat’s, but it doesn’t take an elephant 400 times longer to pee. So, how does this work? David L. Hu digs into what scientists call the “Other Golden Rule.”

How long is an elephant urethra compared to a human urethra?

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Meet The Creators

  • Educator David L. Hu
  • Director Anton Bogaty
  • Narrator Jack Cutmore-Scott
  • Sound Designer Weston Fonger
  • Special Thanks Marc Smith, Patricia Yang
  • Director of Production Gerta Xhelo
  • Editorial Director Alex Rosenthal
  • Producer Bethany Cutmore-Scott
  • Editorial Producer Cella Wright
  • Script Editor Emma Bryce
  • Fact-Checker Eden Girma

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