I’ve mowed (personally and as a summer job when younger) for almost 40 years. Animals of all sorts seem to avoid the mower when already runnng.
As a kid, I gave our family cat a close scalping. It was late fall and we were picking up leaves with the mower. After a lunch break, I fired up the mower and the cat shot out from underneath making an awful noise and headed for the woods.
We assumed she was fatally injured until two/three days later when she came walking back up the sidewalk, sporting a close shave on one part of her head, but otherwise seeming uninjured. She got plenty of her favorite food that day!