Blue-green algae blooms may appear as green or greenish-brown scum on the surface of water and can contain toxins that can be harmful to animals if ingested, even in small quantities.
When this happens, blue-green algae can look like green flakes, greenish bundles or brown dots in a pond, lake or stream, according to the Blue Cross animal charity.
Police are warning dog -walkers and parents to keep their pooches and kids out of the water at Strathclyde Park due to potentially fatal blue-green algae.