I have been around cows and horses my entire life.
It’s rare if I walk behind either and if necessary to walk behind them position myself if they kick they hit my leg or hip.
My wife is a horse vet. One kicked her so bad on her thigh it nearly broke it and she had black and blue spot 12 inches in diameter and she limped for 2 months.
The backside of a cow or horse is the most dangerous place to be.
My uncle was kicked in the stomach by a cow in the 60’s when I was a kid. Damn near killed him...............
You know it. You can never trust them 100%. Never put yourself behind an animal that can kick like that. Even when I cleaned their rear hooves with a pick, I always stayed to the side.
Another thing is when you approach a cow frontways, if it comes at you with its head way down and ears funny...WATCH IT!