1.As a trauma nurse I see a lot. #1 cause of tractor & ATV & lawnmower accidents is embankments. Got just a little too close to the edge & over it goes.Sometimes the edges are soft & give way unexpectedly.
A steam roller on a construction site tossed the driver as it tilted on the edge of the embankment & ran over the guy & he died a few hours later.Multiple internal injuries.
ATV's also run into soft moist soil. They stop suddenly but the driver keeps going~ catapulted the rest of the way.
My DH hooked up the hare on the back of our tractor after the field was plowed up. Only, he hooked it to the wrong height level. He went a short distance, the hare dug in & flipped the tractor faster than he could blink an eye. It landed on top of his chest. Fortunately he was laying in a depression in the soil.Otherwise he would have had a crushing chest injury.The steering wheel was bent, though.
2.Animals: I always make sure I have an exit & am not in a position to get pinned by an animal. Horses make sudden jealous maneuvers when feeding & you can get struck by one horse trying to maneuver to get away from a horse bite. Going thru a stall door- my Belgian couldn't wait to get at the grain & pushed past me, stepped on my foot

& I fell to the ground with him still on my foot.Then he started to maneuver around & could have stepped on my stomach if he didn't pick up on where I was.
I place each horse in a stall before getting their grain. Safer.My friend ended up with a lacerated liver & nearly died when visiting her uncle's farm. The gelding 'put it in reverse' when he realized she was in the corral while he was eating grain.He kicked her in the abdomen clear across the corral.
Recently, a longhorned cow decided to take a walk out to the highway & stop traffic. The farmer went out to try & shoo her back onto his land.She decided to play "El Toro"!

Charged & tossed him in the air & dropped to the ground. But~~ he's on COUMADIN! A blood thinner. Blood everywhere! He ended up OK, but you never know. She was NEVER a problem before. Maybe it was hormonal?
"CHANCE FAVORS THE PREPARED MIND"~ from a Steven Segal movie. (I never forgot it.)