Seen several now over the last couple of years. They originate from dumped farm-bred boar crossed with domestic pig so are not really afraid of humans. They are confident but will generally avoid human contact so, like mattsccm says, will normally walk away and avoid people.
They’re mainly nocturnal and the FC are trying to heft them away from towns and villages to prevent conflict.
But…
Has anyone seen reports in the press today saying that the FC have confirmed that there have been recorded sightings of a big cat. These press reports stem from a Western Daily Press reporter asking for the information under the Freedom of Information Act!
Chatting to a FC ranger today he told me that there have been two recorded sightings by FC staff in the last 5 years. These sightings were apparantly through night sights by experienced staff out doing deer counting surveys and the like. They workers are familiar with the fauna of the area and are experienced in the use of the sighting equipment so there is no doubt amongst FC staff that the sightings were accurate.
Have to say though that in my 50 odd years wandering the Dean I have never seen a big cat. Various deer, boar, badgers, foxes, mink, rodents & even an otter. I think I’ve seen a polecat but never seen a big cat :~(