An additional data point is that Midewin's bison area is surrounded by a double fence - a barbed-wire one to keep the humans out and a stout steel one to keep the bison in.
The Fermilab bison used to have (probably still do) a sign in their field that said, amusingly, not to jump the fence into the field unless you can cross it in 9 seconds, because the bull can do it in 10. (grew up on the DuPage county side of Fermilab, got to take physics there too, which was awesome)
The Fermilab bison used to have (probably still do) a sign in their field that said, amusingly, not to jump the fence into the field unless you can cross it in 9 seconds, because the bull can do it in 10. (grew up on the DuPage county side of Fermilab, got to take physics there too, which was awesome)