This is the painful moment a horse from the King's Guard bites a tourist in London after she stands too close to it.
The animal was filmed chewing on the woman's arm while she posed for a picture in Whitehall.
Despite not touching the horse, the animal then swung its head and bit her left arm and held on for a moment.
She was chomped by the animal in front of a sign warning people near where guards are stationed: "Beware, horse may kick or bite. Don’t touch the reins.”
It is not the first time King's Guard horses have dug their teeth at those aiming to grab a photograph during their travels.
Last year, a woman desperate for a photographic souvenir fainted outside the Household Cavalry Museum after being bitten on the arm by an unsettled horse.
Meanwhile a Spanish tourist was reprimanded after flapping her umbrella in front of the King's Guard to agitate his horse.
In another incident, two tourists got the shock of their lives when they grabbed at the reins of King's Guard horses, prompting furious shouts from the normally silent guards.
An Army spokesman said: "Whilst every effort is made to ensure public safety, horses may bite or kick.
“We continue to remind the public to adhere to the very clear warning signs and maintain a safe distance."
Horse behaviour expert Suzanne Rogers previously told The Standard: “These horses are highly trained but they are made to stand in a small area for long periods of time.
“So it might not be what the tourists themselves did — it might be the result of a lot of triggers.”
The King's Guard are sentry postings at Buckingham Palace and St James's Palace, organised by the British Army's Household Division.
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They are also involved ceremonial events, such as the Changing of the Guard.