What is the worst invasive species in the world?

(other than humans) 🙂



  1. 0 Votes

    There is a very thorough and eloquent answer to this question by Green Answers user oharem here:


    The top three (on oharem’s list) are

    1. Rats

    2. Cane Toads

    3. Rabbits.

  2. 0 Votes

    I think it depends on the area! Some species of fish can be very invasive to a natural habitat but when it’s in its own ecosystem it’s a natural inhabitant and NOT evasive. 

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