I have heard from a few that have mate and every story is the same the dogs run up won't engage and come running back tails down and act all clingy, the other thing with all the people that say I would shoot it course it or whatever is that it takes quite a bit for your brain to actually take in what you are seeing and normally you gather your thoughts after the encounter, it's all to fast to take in and process in a short time need your mastiff types bred for dealing with big cats dogo argentino boerboel American bulldog types but at 3 for a leopard ?