I have seen multiple coyotes hanging on a barbed wire fence and the explanation is that the other coyotes would stay away if they saw smelled their brethren hanging there dead. No idea if there is any truth to it.
There was a corner like that in Northwest Houston area back in the 60’s called Wolf corner. Dead wolves and coyotes were hung from the fence on either side of the corner post.
NOPE; the live ones will just eat them and come back looking for more!
Years ago (1994??) when they first introduced wolves to Idaho (four of them), a rancher killed one and hung it on a fence with the sign “Ranchers 1, Wolves 0”.
I think they introduced a total of 35 wolves or something over the years. The population is now over 1,500.