Dog owners are being warned over the danger posed to pets by blue green algae.

The British Veterinary Association (BVA) said toxins in the algae can be harmful to animals even if ingested in small quantities.

Symptoms can include vomiting, diarrhoea, drooling, disorientation, trouble breathing, and seizures.

If left untreated, the toxins can cause liver damage and ultimately be fatal within days.

The warning comes amid a rise in reports of blue green algae being sighted in Scottish lochs and ponds.

Gudrun Ravetz, BVA vice president, said: "We know that some dogs enjoy nothing better than a paddle in a cool lake while on a walk in this hot weather, but my advice to pet owners would be to keep your dog on a lead during walks near water confirmed to have toxic algal blooms.

"While not all blue green algae are poisonous, it is impossible to tell the difference visually, so it is better to be safe than sorry."

Dog owners are urged to keep their pets on a lead near to bodies of water and to keep an eye out for warning signs indicating the presence of algae.

The DVA also recommends washing animals thoroughly with clean water if they have been swimming outside.

Mr Ravetz added: "Prompt veterinary treatment is key to tackling the effects of the toxins and ensuring a good chance of recovery, so if you suspect your dog has been exposed to blue green algae, rush it to your local vet without delay."