(big) black cats

There's been two recent sightings of a large black cat on the moor.
It may have been sheltering in old jet mines and living on rabbits.
Would anyone like to comment further, or have you seen it?
It was not a particularly large animal, about the size of a labrador dog.

Here's a website about them, and google finds much more information.

This is the sort of thing that *might* be there.