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Zoo Doo: Composting carnivore waste

Updated: May 16



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Speaker: Sustainable Waste Management Specialist  Liv Johansson, Woodland Park Zoo, Seattle, WA US


Many zoos worldwide compost their animal poop. Does adding carnivore waste make a difference in the protocols or resulting tests for pathogen levels?


After four decades composting herbivore waste, Seattle Zoo added poop from its meat eaters to the feedstock mix in 2023.

Learn more about how the process went with BIG cats and dogs! Includes information about:

  • composting protocols

  • test procedures and

  • results and uses and distribution of the finished product.

Great examples of animal waste and Circular Economy principles!

Click here to view the webinar.







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