Acorns are dangerous to dogs when eaten and pose a serious threat to their health.
Sean McCormack, head vet at tails.com, warns that despite being a delicious treat for squirrels and other wild animals, acorns and conkers can be extremely toxic for dogs.
He said: "Many pet parents do not realise that they can cause vomiting, diarrhoea, abdominal pain and lethargy when our furry friends decide to chew or swallow them.
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“You can usually recognise the signs between one and six hours after ingestion, but in some cases, it can be delayed for a couple of days.
"Signs may be noticeable in your dog’s vomit or stool, but another less common symptom is a rash or swelling on the eyes or around the lips."
He added: “Keeping a close eye on your dog when out exploring in autumn, is the best way to avoid poisoning. But if you suspect that your dog has swallowed an acorn or conker, it is important to seek veterinary advice straight away”.
Acorns are poisonous because they contain tannins, a type of bitter plant compound that can be harmful to humans as well as to dogs.
In dogs, tannins can cause upset stomachs, with the chance of blocked intestines and, though rare, can lead to kidney failure and be fatal. It is also possible for them to cause a blockage of the intestines in smaller dogs.
Dogs should be kept away from acorns, and not encouraged to catch them or use them as toys.
The Blue Cross charity reports vomiting, collapsing, diarrhoea, abdominal pain, dehydration or toxic shock as some of the possible effects that may happen within a few hours of acorns being ingested.
Depending on the severity, your dog may need to be rehydrated and given medications to manage its symptoms.
In the case of an acorn causing a blockage surgery will be needed, says Blue Cross.
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