@JeffL916 ... please take the comments by
@Brute 23 on the cattle seriously. Horns seldom actually are used by most "tame" cattle... it is the unexpected swinging around of the head that will badly hurt a person. If a cow considers someone or something a threat, they will come after you. If you are petting a cow that is super tame, and she sees something out of the corner of her eye and swings her head around, she can knock down or severely hurt a small person/kid. Horned cattle more often will use the horns on another animal than on a person. And that's to establish their "space" as much as anything. Most don't even realize that the horns would catch you as they move their heads. Yes, polled is less risk of an unintentioned hit, but an animal with no horns that is upset or being protective, will use their skull/head to try to grind someone into the ground or into a fence or barn wall...
The friendliest animal is still subject to being startled, or being protective of a calf. I have had a holstein that thought I was a threat after she calved for no good reason, try to put me though a board fence in the calving pen...
And a kick would kill or severely injure a child... and they will do that if startled or caught off guard. Cattle are a prey animal... their instincts will never be totally bred out of them.