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Warning! Do not let your small dog bathe in a lake


Silkeborg Municipality warns small dog owners to stay away from Silkeborg Langsø and Gjessø. Why? Poisonous blue-green algae that developed due to the strong sun we had in the previous weeks. Small dogs can die in contact with the poison. 

  • Is this only in Silkeborg? So far, only Silkeborg made an announcement, but it’s hard to believe that other lakes escaped the blue-green algae infestation. When you go into a lake, all the way up to your knees, and you cannot see your toes, then you should not bathe in there. 
  • The blue-green algae is not a typical algae but a cyanobacteria that, in small quantities, is invisible to the eye. You can see it when it covers the water with a thin layer of paint (which can be green, brown, yellow, blue, or a combination of them). Foam in the water is a clear no-no for bathing. 
Narcis George Matache
Narcis George Matache
Executive Editor and Founder of "Last Week in Denmark".

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