- Scientists collected pee with cut-up soda bottles from zoo animals and found that most mammals, big and small, need 21 seconds to urinate. The secret seems to lie in the urethra's design. http://www.latimes.com/science/sciencenow/la-sci-sn-peeing-mammals-bladder-animals-urination-bioinspired-20140624-story.html 5 comments science
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