Kingfisher101
Veteran
Lots of foxes here.
Like @Slick said, they are out and about even in daytime.
I have to keep one of my cats inside overnight - the other doesn't go out - because he had several fights with foxes, resulting in frantic vet visits and lots of fur scattered allover the street.
One of mine who was getting on and disabled was taken overnight by a fox. They are opportunists so will go for a compromised cat or a kitten etc. A fit healthy cat would just fight it off no problem.