Consuming large amounts of seawater can result in harmful side effects for your dog, including diarrhoea, vomiting, increased heart rate, loss of appetite and, in severe cases, seizures.

While temperatures are rising around the UK, going to the beach has certain dangers for dogs. Keep reading for everything you need to know about the dangers of drinking saltwater, including saltwater poisoning and symptoms to look out for.

Is it dangerous for dogs to drink seawater?

Drinking excessive amounts of salt water is dangerous for dogs. This is because the high levels of salt in the seawater can disrupt the fluid balance in your dog's body, drawing water from the blood into their intestines.

Sean McCormack, head vet at Tails.com, explains this further: "Seawater contains a high balance of salt, approximately 35 grams of salt in every 1 litre (1000 ml). If your dog drinks too much it can quickly become dehydrated, and symptoms can worsen if your dog isn’t provided with fresh drinking water."

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If your dog has ingested too much seawater, they may start to display the following symptoms:

  • Diarrhoea
  • Vomiting
  • Lack of appetite
  • Lethargy
  • Convulsions
  • Increased heart rate
  • Loss of coordination
  • Tremors
  • Excessive thirst
  • Loss of appetite
  • Seizures

"If you recognise these signs within your pup during your trip to the beach, you need to get them to the vet as soon as possible," Sean adds. "If left untreated they could suffer serious kidney damage, brain damage and rapid dehydration which could prove fatal."

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What should you do if your dog drinks too much seawater?

If your dog has consumed too much seawater, follow the vet-approved steps below:

1. Take them home and monitor them. If they are showing the above signs, take them directly to an emergency vet to be observed. The vets will help to reduce the sodium levels in your dog's blood.

2. Providing a relaxing and calming environment for your pup is crucial for recovery. Bring their belongings into a quiet room, one that can be easily cleaned as your dog may suffer from vomiting and diarrhoea.

3. Give your dog small amounts of water every 30 minutes, to help their bodies replace the fluids.

How can you prevent seawater poisoning in dogs?

pet head Sunny Daze Prism Dog Water Bottle 250ml

Sunny Daze Prism Dog Water Bottle 250ml
Credit: petsathome.com

When dogs are thirsty, they will drink almost anything. Owners can prevent seawater poisoning by ensuring pets have enough fresh, clean water to drink. If you are heading on a day trip to the beach, make sure you bring a dog bowl (you can buy a portable water dispenser for on-the-go).

Sean adds: "It's also a good idea for your dog to take a break from the sea every 15 minutes or so. Use this time to offer your dog fresh water, if they are refusing to drink, squirt or pour it directly into their mouth. Regularly drinking fresh water will help to rehydrate them.

"Keep a close eye on your dog when they head down to the waters and limit your beach outings with your furry friend to two hours."

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Lisa Joyner
Deputy Daily Editor, Country Living and House Beautiful

 Lisa Joyner is the Deputy Daily Editor at House Beautiful UK and Country Living UK, where she's busy writing about home and interiors, gardening, dog breeds, pets, health and wellbeing, countryside news, small space inspiration, and the hottest properties on the market. Previously, she has written for Conde Nast Traveller, House & Garden and Marie Claire magazine. Lisa studied at University For The Creative Arts, where she completed a BA in Fashion Journalism.