Mushroom Poisoning in Dogs: Common UK poisonous fungi, symptoms, what to do

While this is only a risk to humans when they forage for food and mistake a dangerous fungus for a harmless (and tasty) species, that’s not the case for our four-legged friend.

Many dogs eat first and think later, and with mushrooms that can be a potentially lethal mistake.

Here’s what you need to know, courtesy of the experts at Kennel Store.

Dangers of mushroom and fungi

Wild mushrooms are extremely common in autumn and are often found in parks, woods and even your own garden. But some wild mushrooms can be toxic to dogs to pets and can grow rapidly overnight in mild, wet weather and can be hard to avoid. 

Common Poisonous Mushrooms in the UK

• Fly Agaric (Amanita Muscaria) – the easily recognisable fairy-tale mushroom with a red cap and white spots
• Death Cap (Amanita Phalloides)
• Deadly Webcap (Cortinarius Rubellus)
• Funeral Bell (Galerina Marginata)
• Destroying Angel (Amanita Virosa)
• Fool’s Funnel (Clitocybe Rivulosa)
• Panther Cap (Amanita Pantherina)
• Angel’s Wings (Pleurocybella Porrigens)

Symptoms of mushroom poisoning 

If your dog has eaten a poisonous mushroom, the symptoms can vary between different varieties. But it’s important to be aware of the following:

• Vomiting
• Stomach ache
• Diarrhoea
• Lethargy
• Excessive salivation and drooling
• Wobbling, loss of balance
• Yellowing of the white of the eyes or skin and gums
• Seizures
• Loss of motor control
• Collapse
• Organ (liver or kidney) failure
• Coma

What to do if you suspect your dog has eaten a poisonous mushroom

If you suspect your dog has ingested a poisonous mushroom, take them to the vet as soon as possible. Take a picture, or if possible take a sample of the mushroom that has been eaten so your vet has an idea of what your dog has eaten and how to proceed with treatment. 

You may not see your dog eat a mushroom. If you notice neurological signs, agitation, vocalisation (different to normal) or odd behaviours following a walk, take your dog to the vets. 

Symptoms can be frightening so it’s important to stay calm and act quickly.”