We are dog sitting my sibling's rat terrier/jack russell and I'm trying to train her to coexist with the chickens. This dog has an extremely high prey drive. Last night, when I brought her home, she was all over my hoop house and at one point she was halfway on top of the house. I had to get the hose (she hates to be sprayed with the hose) just to get her to back off. Today, I took her out there and used a squirt bottle (which she also hates) to get her to leave the chickens alone. Obviously, I would never allow her to be outside without supervision, but is it possible to train a dog with such strong instincts to leave the chickens alone or am I just wasting my time? Before we got chickens, we dog sat this dog frequently.