Beware of Blue-Green Algae
Cyanobacteria, referred to as blue-green algae, are microscopic organisms found naturally in all types of water; they grow quickly, or bloom, when the water is warm, stagnant and full of nutrients. When a bloom occurs, scum may float on the water's surface. They can sometimes produce toxins, which can cause serious illness if swallowed.
Avoid allowing your pets to graze near, drink, or swim in water where you see blue-green algae blooms, foam or scum on the surface If you think your pet gets into water with a bloom, wash them with clean water immediately, and monitor for signs of poisoning, which are primarily: vomiting, loss of appetite, foaming at the mouth, diarrhea, convulsions, drooling, tremors or seizures, or any sickness occurring within a day of being in contact with this water. You cannot tell if a bloom is toxic just by looking at it!