I would bet my bungalow that Prince Philip would never do such a thing and the Queen, who famously adored her dogs and horses, would never countenance such a horror.
Plus where would they find a vet prepared to carry out surgery on a poor animal for a “prank”?
Utter bollocks.
Diana employed her own psychics to guide her decision making, mostly famously Simone Simmons.
She also employed a clairvoyant called Madame Vasso.
Vasso “worked” for Sarah Ferguson too at the time Diana and SF were still friends prior to verrucagate.
(Vasso even wrote about a book about Fergie for anyone interested in drivel)
This tells me all I need to know about Diana’s grip on reality.
She was a beautiful and charismatic woman who died tragically young but she was very impulsive and frequently very misguided.
Had she not died young and had not been so attractive she would be seen for what she was instead on being canonised.