I dog sit for a couple I clean for 4 or 5 times a year while they go on holiday. Earlier this year I was taking the dog, a Beagle Mix, over the fields when one of these dogs over the far corner of the field started running towards us. It jumped on my little dog and I was screaming like a mad woman, luckily the dog owner was a young fit teenager who caught up with it and wrestled it away from my dog and no damage was done. He was very apologetic as he was concerned as much for me as I was in a bit of a state but the thought of what he could have done freaked me out.