Got a pat the same, kept fight with my pat x jack. got so bad i have to put her in a kennel/run in the garage. She was ok till she got to about 8 month old, they used to play. but now she just goes in for the kill. Used to latch on to other one and shake hell out of her. The only way i could get them apart was to throw them in the pond, and wait till they let go.