Seahorse66, Ive been reading Vicky Halls' (cat behaviour bod) books about cat behaviour and shes had quite a few incidents with cats attacking feet, biting, scratching etc, it may be worth you reading her books as there were quite a few different incidents and they were happening for different reasons and it tells you when remedies she came up with and how she worked with the owners to remedy it. May be something in there to help you? you can get all her books on Amazon in paperback, I hope it may help xxx