Fox won't hurt the horse...
Coyotes normally won't either unless working in a pack and you would hear the commotion.
We have coyotes and fox cross our pasture often..they mind their business and not mess with the horses.
The horses though keep a wary glance.
I have no fear they will stomp to death a attacking coyote.
Fox...just moving through never seen them even look that direction.
The snake...a black racer is a good snake to have.
Decent sized that one is he will keep down your rodent and frog population among other animals.
Best is if you have a black racer they patrol and keep away venomous snakes making your yard safer to be out in... That is what I was told by a snake expert and believe it..
rattlers...since "my" black racer arrived no more rattlers in my yard and I do look and watch closely for them...
I do see the rattlers on a neighbors fields, but they don't come in mine...
I am not
a fan of snakes but they do a job and not bother me so not bothering them.
The racer actually were friendly to my dogs when we startled them one day sunning themselves on my back deck...nose to nose and everyone walked away unscathed and I did not have a heart attack like I anticipated...but no snake is my preference, but if a snake make him a gooder one to have around.
Think my dogs also have to do with some of the wildlife keeping their distance too.
have a yellowish cream colored rat snake in my barn, he too does his job of rodent control.
He just scares the crud out of me when I not notice him and he is close by and suddenly moves he makes me jump and run like heck...he's pretty big at near 7 feet long and thick as my forearm...but totally harmless to me who doesn't harass him either.
Both snakes know about each other but have staked out their territory and that seems to work for them...
My black snake would be a dead one if he ticked off the rat snake for shear size difference alone.