Dogs and Conkers: Pet owners cautioned over conkers - which can cause respiratory paralysis and death

The shiny brown seeds have been used to play the game of conkers for well over 150 years by generations of children - and occasionally adults - who pop them on a string and hit them against each other until one is destroyed.

Whether they are lying on a pavement, the forest floor, or in your house, it’s important to make sure curious dogs don’t accidentally eat them - according to the dog experts at Kennel Store 

They have provided a warning to dog owners that they can be incredibly dangerous and even cause death.

Here’s what you need to know.

What is a conker?

A conker is a shiny, round, red-brown seed from a horse chestnut tree (Aesculus hippocastanum). These trees are typically found in parks, gardens and along the pavements  in the UK. Conkers are often found on the ground in autumn after dropping from the tree encased in a green or brown spiky fruit.

Why are conkers dangerous to dogs?

Conkers are poisonous to dogs because they contain a toxin called aesculin, which can cause vomiting and upset stomachs in dogs. If enough are eaten, the effects can be serious and in rare cases deadly. 

What are the symptoms of conker poisoning?

Symptoms usually appear within 1-6 hours of ingestion, but can be delayed by up to a few days.

• Vomiting, which may contain blood
• Diarrhoea
• Drooling
• Abdominal pain
• Increased thirst
• Refusing food
• Not walking in a straight line
• Restlessness
• Wobbliness
• Muscle tremors 
• Struggling to move

The severity of symptoms depends on the amount of conkers eaten and the size of your dog. If left untreated, conker poisoning can lead to toxic shock, respiratory paralysis and even death, so treatment is vital and could save your dog's life. 

When should I contact my vet?

If you think your dog has eaten conkers, you should contact your vet for advice. If you’re unsure if your dog has consumed them but they are showing signs of poisoning, you should speak to your vet. Note the time and how many conkers you suspect your dog to have eaten. Never attempt to make your dog sick as this can be dangerous and cause other issues.