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Owners urged to keep dogs away from blue-green algae
Blue-green algae can contain toxins that are potentially fatal to dogs when ingested.
BVA’s advice follows recent reports of algal bloom in the UK.

The British Veterinary Association (BVA) has issued a warning to pet owners about blue-green algae, urging them to keep their dogs safe when walking near freshwater bodies this summer.

The warning comes after a number of recent reports of algal bloom in lakes, ponds and rivers around the UK, including the Lake District and Shetland Islands. The UK Centre for Ecology and Hydrology’s (UKCEH) Bloomin’ Algae app identifies confirmed sightings and people are encouraged to submit details and photographs of suspected sightings. 

BVA’s tips for dog owners are:
  • Look out for warning signs near water bodies
  • Keep pets on a lead around water bodies known or suspected to have a blue-green algal bloom, and don’t let pets swim in it or drink from it
  • Wash a dog’s coat thoroughly with clean water after swimming outside 
  • Seek emergency veterinary treatment if you’re concerned your pet may have ingested toxic algae.
Blue-green algae, also know as cyanobacteria, can appear as green or greenish-brown scum on the surface of freshwater. The bacteria can contain toxins that can prove fatal to dogs when ingested even in small quantities. 

BVA president Malcolm Morley said: “Lots of dogs love water and won’t hesitate to dive straight in when they see a lake or go for a paddle in a pond. But toxic blue-green algae is very difficult to identify and, if ingested, can make dogs seriously unwell – and can even be fatal. We’re urging pet owners to keep their dogs on leads near water bodies where blue-green algae has been confirmed or, if unsure if a water body is safe, to keep them away from it completely. It may seem a shame to spoil your dog's fun, particularly if they are used to swimming somewhere, but if you are unsure it is safe, it is not worth the risk. 

“Being aware of the symptoms of exposure is also vital as there is no known antidote for the toxins and prompt treatment is critical to help give a chance of recovery. Symptoms can appear within a few minutes or hours of exposure, and commonly include vomiting, diarrhoea, drooling, disorientation, trouble breathing, seizures, and blood in faeces. If you have any concerns or are worried your pet may have had contact with blue-green algae, speak to your vet as soon as you can.”

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Webinar to explore AMR in vet dentistry

News Story 1
 The WSAVA has invited veterinary professionals to a webinar on responsible antibiotic usage in dentistry.

On 19 November 2025, at 1am, Dr J Scott Weese and Dr Brooke Niemiec will share the latest advice for antimicrobial use. They will present research on oral bacterology, and explain how attendees can choose appropriate antibiotics.

The session will cover pre-, intra- and post-operative guidelines, with recommendations for various pathologies.

The webinar is designed to support veterinary professionals to make informed decisions and tackle antimicrobial resistance.

Attendees can register here

Click here for more...
News Shorts
Bluetongue reaches Wales for first time in 2025

The Animal and Plant Health Agency (APHA) has revealed that bluetongue has been confirmed in Wales for the first time in 2025.

In their latest statistics, APHA records a total of 109 cases of BTV-3 or BTV-8 in Great Britain in the 2025-2026 vector season.

The total number of BTV-3 cases in Great Britain this season is 107. This includes 103 cases within the England restricted zone and four cases in Wales.

There has also been two cases of BTV-8, which were both in Cornwall.

As a result of the cases in Wales, a Temporary Control Zone (TCZ) is enforced in Monmouthshire. Animals can move freely under general license within the England Restricted Zone, however animals with suspected bluetongue must stay on their holding.

All premises testing positive for blue tongue can be viewed on this map.