Beware of blue green algae-poisonous to dogs
Helpful member
Now the sunshine is here and water sources are low then the warning comes of the poisonous blue green algae in reservoirs, lakes etc -so if you have a dog be careful
https://www.bluecross.org.uk/advice/dog/blue-green-algae-and-its-dangers-to-dogs
I also like this guide from Benidorm seriously