Foxes are terrifying if you don't know what they are, and even if you do you can be caught off guard.
I grew up near fox cover, they'd come down from the wooded hills to scavenge/go after poultry.
We had a big dumb outside dog - one fox would go one end of the house making noise, which would send him barreling down to the fence barking like crazy. Then another fox would hop in and steal his food at the other end
I feel like I should check this out but also should not