King Charles and Queen Camilla's country estate - Highgrove House - is reportedly being stalked by a large panther.
The beast was seen hunting a fox near the Royal residence, with an eyewitness claiming her three dogs frightened it off. This follows another sighting of a black panther near the M5 motorway in May.
Big cat expert Rick Minter, who hosts a podcast detailing such encounters, is investigating these sightings. He revealed: "A dog walker near Tetbury watched a black panther cornering a fox at dusk. Her three big dogs were on leads but they rumbled the cat, which rushed away and the fox emerged from its trapped situation and left the area keeping close to the walker and her dogs, seemingly wanting their company for safe escort."
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Rick also shared details of a similar sighting north of Stroud, Gloucestershire, where a black panther was seen stalking deer. He noted that the witness "noticed an orange hue to the animals' otherwise dark fur, suggesting it was a leopard in its black form, which most of the credible 'panther' sightings would seem to be", reports the Daily Star.
In addition to these, Rick has been looking into the M5 sighting, stating that a local farmer reported disturbances among his livestock. He said: "In May a driver claimed to have seen a black panther lurking in the scrub by the M5 motorway verge in south Gloucestershire.
"In following it up I found that the neighbouring farm at that spot reported that its cattle had been on edge and were behaving nervously for a few days around the time of the slighting."
Rick has put together an exhibition - Depicting Britain's Beasts: the art of British big cats - at the Nature in Art gallery in Gloucester which runs until Friday.
He went on: "No doubt they mainly originate from discarded trophy pets but they now seem to be playing their part as predators in the ecosystem.
"Among other things the exhibition showcases the big cats' feeding habits on natural prey like deer with tooth marks on bones as evidence."

Earlier this year, we reported how a big cat is feared to be stalking the area near Ed Sheeran's countryside home. The Perfect singer resides at the secluded estate with his wife Cherry Seaborn and their two daughters.
But a black panther-like creature was seen in the rural area less than five miles from his property. A local resident caught sight of it and captured the images on their mobile phone.
It was seen in the town of Eye, north of Ipswich, Suffolk. Matt Salusbury, who operates the Big Cats of Suffolk website said: "The witness told me they'd seen a large black animal walking up and down along the tree line at the end of a field behind their garden.
"The distance from where they were to the animal when they photographed it was a good few minutes walk. They observed it for more than five minutes before it sat down with its head up."
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