In the passed, i found by using recharge (dog electrolyte) before running hard and after, it stops this happening.
Also, a dog needs to be very fit, to run hard as explained about, with a very good diet.
Taking a dog out that is not a 100% fit, on strong quarry, or a hard nights lamping, is asking for this to happen!
I have a lurcher bitch, 3 years ago, she ran a hare to a stand still and got Coursing thirst, she was saved by recharge at the time.
I could not get this electrolyte again, so used liquid life aid, recommended to me by a greyhound man, but later found out, this was not suitabl