Dog owners advised to stay alert as blue-green algae blooms spread across UK

Dog owners are being urged to keep their pets away from still or slow-moving water this summer, following confirmed sightings of toxic blue-green algae across several parts of the UK. The UK Centre for Ecology and Hydrology has reported blooms in areas including Birmingham, the Lake District, Northern Ireland and Central Scotland.

Blue-green algae, or cyanobacteria, typically flourish in warmer months and stagnant water. While not always easy to spot, the toxins produced by this algae can be harmful or fatal to dogs if ingested or if they come into contact with contaminated water.

Edward Creaser, Director at the Natural Dog Food Company, warned that dogs are at risk if they drink affected water, swim in it, or groom themselves after exposure.

“Dogs are vulnerable to blue-green algae if they drink contaminated water, swim in it, or ingest algae that get caught in their fur while grooming. Contact with toxic blue-green algae will often cause long-term health effects and can be fatal.”

He advised that toxic algae typically forms a surface scum with green flakes or clumps, and may turn the water cloudy or greenish-brown. Unlike regular green algae, which clings to sticks when poked, blue-green algae usually breaks apart. Signs of blue-green algae may also include dead fish in the water.

Dog owners are advised to seek immediate veterinary help if their dog shows symptoms such as vomiting, diarrhoea, confusion, seizures, excessive drooling, breathing difficulties or an irregular heartbeat after being in or near affected water.

“Even small amounts of algae can pose serious health risks, so avoiding exposure is the best way to protect your dog from potential poisoning,” said Creaser.