When I was around 10 so 1999 I read a book in year 6 about the beast of bodmin.
It was a fictional book and it had a (zoomed in) panthers face on the cover, it was mainly black but it had two bright green eyes looking through long grass.
I always thought it was called the beast of Bodmin but I can’t find it, all the books I have found were published in 2004 onwards.
I’ve attached a doodle of what I think I remember the book cover looking like.
I’m sure story was centred around a child/person discovering the panther after livestock kept being found dead but again my memory is so hazy, all I do know is I really enjoyed the book and would love to get it for my daughter.