Most gateways have a gate in them funnily enough...Now what ever your dog is running the chances are they make for the gate and nine times out of ten get through be it speaking pre ban a hare,fox,deer or even a rabbit for my dogs to take plenty of game they need to jump the amount of catches they have had when a hare has gone through a gate and they have jumped it whilst i have seen other dogs not familiar with jumping clatter in to it and run up and down trying to work out how to get through a dog that cant jump is more at risk i think than a dog that can cause if that dog dont know how to